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COLIN FRIELS: Outback Australia...
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.. it doesn't get much harsher
than this.
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(BIRDS SQUAWK)
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00:00:17,000 --> 00:00:18,965
Yet in the middle of the desolation,
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00:00:19,000 --> 00:00:23,688
thousands of cockatoos fly together
in a raucous, defiant mob.
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They don't just survive -
they thrive.
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Stretching across the continent.
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From the heat of the desert interior
to gum tree country...
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.. and snow-covered mountains...
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.. these outrageously colourful
and cocky parrots
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have defied the odds...
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00:00:52,920 --> 00:00:55,969
.. making Australia
the land of parrots.
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Before Australia had deserts,
rainforests covered the continent.
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Today, just a few isolated patches
remain.
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These lush pockets survive
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thanks to the tropical monsoons
that sweep along the far north coast,
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bringing torrential rain.
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In these forests,
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a brilliant array of parrots
adapted crafty beaks
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and dexterous toes
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to crack the rich bounty
of seeds and fruit.
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The tiniest of all, the fig-parrot,
gorges on fruit bigger than its head.
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The general rule for the blokes here
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is to be as colourful
as needs be to attract a mate
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without becoming
a neon lure to predators.
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The king-parrot is brash.
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While the green feathers
of the red-cheeked parrot
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blend into the foliage.
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He relies on his sexy red head
and bright beady eyes to get the girls.
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But one of the most amazing birds
in the world is the eclectus parrot,
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because it breaks virtually every
rule in the evolutionary rule book.
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The male is green,
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and the female, red.
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So strikingly different are they
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that for a long time
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people thought that the two
must be separate species.
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Scientist Rob Heinsohn
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set out to discover the secrets
of this rare creature.
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ROB: Eclectus parrots are
the pinnacle of parrot evolution.
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Their colouration
has gone into uncharted waters.
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They are so different,
and I just needed to know why.
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(BIRDS SQUAWK)
OK.
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Well, I've disturbed them now,
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but I had to do that just to see
if they were occupying the hollows.
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And one did indeed
come out of one of the hollows,
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so that's a very good sign
at this stage.
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And it does mean that
it's worth putting a line up
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and climbing the tree
and having a closer look.
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FRIELS: But there was
just one problem...
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ROB: I have a terrible,
terrible fear of heights.
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I was getting dizzier by the moment,
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but I was also driven by
an incredible desire
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to see what was
inside those hollows.
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So I overcame that fear.
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I forced myself to stay steady
on the rope and to keep climbing.
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Hey, Lindsay, we've got eggs.
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MAN: Oh, fantastic.
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That's absolutely fantastic.
It means they're breeding again.
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I'll just go up to the other hole
and see how they're doing.
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I went up 15m, 20m, 25m,
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and finally I reached
the nest hole I was looking for.
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I reached inside, had a look inside,
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and there were
two beautiful little chicks.
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(PARROT SQUAWKS LOUDLY)
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Yeah, we've got chicks in here.
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Oh, they're beautiful too.
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FRIELS: For the last eight years,
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Rob has studied the female and all
her chicks that live in this hollow.
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He measures and marks each one
and monitors their growth.
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This doesn't seem to upset the chicks
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or stop their mum
from nurturing them.
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ROB: Our number one female,
our star performer,
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she's just done what she typically does,
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is produces healthy little guys like this.
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They get a very good start for
their long life in the rainforest.
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FRIELS: A good hollow is hard to find.
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And the female guards hers fiercely.
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ROB: We've spent a lot of time just
watching her at the nest hollow.
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We built hides
in neighbouring trees
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and we spent a lot of time
in the treetops.
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And we just watch
the female's behaviour.
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(BIRD SQUAWKS )
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FRIELS: Rob's favourite female is
not taking any chances with her hollow
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and doesn't budge for the entire
9- month breeding season.
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She is totally reliant on the male
to bring her food.
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ROB: A bit like Meals on Wheels.
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She's acting like an invalid,
staying at home.
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The males are out there
doing all of the work.
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Coming and going all day long,
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purely for the right
to regurgitate some food to her.
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And, of course, they're hoping
to get sex in return.
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FRIELS: But this female wasn't
just being attended by one male.
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She was getting lots of attention.
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In fact, seven males
were lining up to feed her.
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And she was mating with all of them.
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ROB: And we worked out that this was,
in a way, a form of trickery.
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She was trying to give them the idea
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that they all had a chance
of being the dads.
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And that would give them
extra incentive
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to go off and find the food.
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FRIELS: But the DNA tests
on the chicks' feathers
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reveal something astonishing.
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Of the 24 young she's produced
in the last eight years,
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19 are from the same superstud male.
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To complete the picture,
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Rob wanted to know how far the males
were going on their feeding trips.
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ROB: We captured a whole lot of males and we put
transmitters on their tails.
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We mounted aerials
on the wings of the plane,
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and we set out and followed them
across country from the sky.
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FRIELS: Incredibly, the lovesick male
gathered food
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from a home range of up to
100 square kilometres.
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ROB: It also turned out that he was
attending more than one female.
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And some of them had
three or four different females
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that they were visiting and feeding,
and, indeed, mating with.
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So, by following them
around the landscape,
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we actually caught them out playing
a little mating game of their own.
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FRIELS: After visiting their girlfriends,
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00:08:01,560 --> 00:08:04,609
the males fly back
to Rob's favourite female.
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ROB: The males often come back
to the nest tree at the same time.
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And when that happens,
there's a lot of argy-bargy.
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(BIRDS SQUAWK)
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FRIELS: With such different lifestyles,
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the huge colour difference between
the sexes makes a lot of sense.
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ROB: The male's green -
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very important for them
to remain camouflaged
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when they go across country getting
food from the fruiting trees.
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Males seem to use the red
under their wings very judiciously
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to get the female's attention.
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In contrast, the female's red
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is the very conspicuous,
long-distance signal.
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She shines like a beacon,
but screams at other birds,
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especially females -
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“Keep away, this hollow is occupied.
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“Don't bother coming near
because I will beat you up. ”
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FRIELS: No other bird in the world
mates like this.
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It's a sex strategy
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that's been perfected
over an incredibly long time
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in these ancient forests.
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While the eclectus
were doing their thing,
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elsewhere on the continent
dramatic changes gave rise
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to a whole new range of parrots.
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Millions of years ago,
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most of Australia's rainforests
gradually dried
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and became open woodlands.
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Many parrots were able to adapt
to the new and tougher conditions.
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To survive on the desert edge,
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red-tailed black-cockatoos stick to
the few tree-lined watercourses.
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As the sun drops,
the birds arrive from all directions.
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With breeding hollows scarce,
most of these cookies are single.
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The local watering hole
is their pick-up joint,
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and the evening quickly turns into
a boisterous party.
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(BIRDS SQUAWK)
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Younger birds flirt by displaying
the colour banding on their tails
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and erecting their crests.
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These fancy pop-up crests
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are what distinguish cockatoos
from the other parrots.
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(BIRDS SQUAWK)
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These opportunistic cookies
thrived
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and spread out
as the continent dried.
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During the last ice age,
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winds lashed the land
and heaped sand into vast dunes.
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Grasses and shrubs
spread across the desert,
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producing an abundance of seeds.
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The galahs were quick to
take advantage of the new foods.
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They were not fussy eaters,
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and went just about everywhere
eating almost anything.
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Today, there's barely
a patch of Australia
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without these extroverted cookies.
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But the opportunistic galahs were
not the only ones to try new foods.
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The less common
Major Mitchell cockatoos
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have recently acquired a taste
for paddymelons.
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These inquisitive birds
have little trouble
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working out some fancy footwork
to break into the fruit.
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Their new cuisine arrived as part of
an exotic smorgasbord.
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150 years ago, cattlemen pushed
their way to the desert centre.
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And wherever they went,
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they brought a whole range of new
opportunities for parrots to exploit.
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Paddymelons were introduced to feed
the camels of the Afghan traders
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as they travelled the outback
supplying the isolated properties.
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It was a tough life
for the early pioneers.
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And frequent droughts
made it hard to make a living.
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Adding to the farmers' woes,
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the cockatoos soon worked out
that where there was stock...
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.. there was stockfeed.
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All this free fast food
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made life pretty cushy
for generations of cockatoos
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and their numbers boomed.
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(BIRDS SQUAWK)
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And the good times kept on rolling
for the cockatoos and parrots...
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00:13:25,880 --> 00:13:29,680
.. when the settlers found underground
water and pumped it to the surface.
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Man-made waterholes helped parrots
spread and survive
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where they couldn't have done before.
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Ringneck parrots...
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.. budgerigars...
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00:14:00,000 --> 00:14:04,050
.. pale-headed rosellas all come in
to drink in family groups.
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00:14:05,520 --> 00:14:08,565
Mulga parrots can live in
waterless areas
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00:14:08,600 --> 00:14:11,570
but no-one in the outback
turns down a free drink.
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00:14:22,000 --> 00:14:24,810
Rain rarely falls
in the Australian deserts.
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00:14:27,200 --> 00:14:29,521
Droughts can last for over a decade.
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00:14:37,960 --> 00:14:39,769
Waterholes turn to mud...
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.. leaving a freshwater crayfish
exposed...
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00:14:51,400 --> 00:14:53,050
.. and an easy target.
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00:15:10,960 --> 00:15:13,770
The wildlife has adapted
to survive the times
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00:15:13,805 --> 00:15:15,842
when the rivers
vanish into puddles...
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00:15:20,400 --> 00:15:23,643
.. and the dams are turned to
cracked and useless crusts.
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00:15:33,720 --> 00:15:35,768
The air crackles in the heat.
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00:15:37,520 --> 00:15:39,602
Crops are wiped from the earth.
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00:15:46,000 --> 00:15:50,210
And the parched interior waits
for rains that never seem to come.
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00:15:56,360 --> 00:15:58,942
The first sign that
the drought might break
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00:15:58,977 --> 00:16:01,525
can be a warming
of the western Pacific Ocean.
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00:16:03,160 --> 00:16:06,846
Cyclones form by sucking up
heat and moisture from the sea
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00:16:06,881 --> 00:16:09,161
as they power in towards the coast.
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00:16:15,320 --> 00:16:20,565
Winds of up to 250km/h
shred the shoreline.
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00:16:25,600 --> 00:16:27,525
As the cyclone heads inland,
215
00:16:27,560 --> 00:16:31,087
it weakens and turns into
a huge rain depression.
216
00:16:33,320 --> 00:16:35,687
The deluge sweeps
thousands of kilometres
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00:16:35,722 --> 00:16:38,001
across the centre of the continent.
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00:16:46,200 --> 00:16:48,885
And cockatiels celebrate
with a rain dance.
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00:16:49,880 --> 00:16:52,765
(BIRDS SQUAWK)
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00:16:52,800 --> 00:16:57,203
Within hours, every riverbed
fills with life-giving water.
221
00:17:03,080 --> 00:17:07,130
The torrent charges through
the narrow gorges of the ranges
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00:17:07,165 --> 00:17:09,122
eroding the land.
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00:17:16,520 --> 00:17:19,729
Ribbons of nourishment
snake across the continent
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00:17:19,764 --> 00:17:21,927
towards the parched centre.
225
00:17:36,760 --> 00:17:38,205
In the Channel Country,
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00:17:38,240 --> 00:17:42,086
the creeks fan out across
previously barren flood plains.
227
00:17:46,600 --> 00:17:50,400
And for a brief time
the desert is given the kiss of life.
228
00:18:00,800 --> 00:18:04,771
In a flash, desert plants
produce vast quantities of seed.
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00:18:11,720 --> 00:18:14,326
Somehow waterbirds
sense the transformation
230
00:18:14,361 --> 00:18:16,448
and travel vast distances.
231
00:18:22,000 --> 00:18:24,380
Fish breed up
in the newly formed lakes
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00:18:24,415 --> 00:18:26,761
providing a feast
for growing cormorants.
233
00:18:35,480 --> 00:18:38,927
Brolgas arrive in Search of
the roots of sedges.
234
00:18:43,600 --> 00:18:46,604
(BIRDS SQUAWK)
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00:18:56,560 --> 00:18:58,765
And when native grasses
start to seed,
236
00:18:58,800 --> 00:19:03,283
the scene is set for the arrival of
the stars of the Australian desert...
237
00:19:05,920 --> 00:19:07,410
.. the budgerigar.
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00:19:09,000 --> 00:19:10,885
We keep them in cages,
239
00:19:10,920 --> 00:19:14,543
but in the wild,
budgies roam the vast outback.
240
00:19:14,578 --> 00:19:18,166
When it rains, flocks swoop in
from everywhere.
241
00:19:20,000 --> 00:19:22,321
No-one knows how they navigate.
242
00:19:22,356 --> 00:19:23,765
Perhaps they home in on
243
00:19:23,800 --> 00:19:25,928
the low-frequency sounds
of thunderstorms
244
00:19:25,963 --> 00:19:27,524
thousands of miles away.
245
00:19:33,000 --> 00:19:36,641
Their aim is to breed furiously
while the conditions are right.
246
00:19:39,800 --> 00:19:42,205
Along the gorges of
the Central Ranges,
247
00:19:42,240 --> 00:19:46,006
every tree hollow is alive with
the flutterings of courtship.
248
00:19:46,041 --> 00:19:48,965
(BIRDS cl-CHIRP)
249
00:19:49,000 --> 00:19:51,241
The river bank is perfect
for a dinner date.
250
00:20:00,880 --> 00:20:02,405
In the budgie mating game,
251
00:20:02,440 --> 00:20:05,405
you need to be camouflaged
while feeding on the ground,
252
00:20:05,440 --> 00:20:08,370
but still spunky enough
to impress a potential mate.
253
00:20:10,560 --> 00:20:12,722
And the way budgies see
each ether's feathers
254
00:20:12,757 --> 00:20:14,848
is different to the way we see them.
255
00:20:20,000 --> 00:20:22,365
We see in red, green and blue.
256
00:20:22,400 --> 00:20:24,687
But budgies have
a fourth cell in their eye
257
00:20:24,722 --> 00:20:27,445
that enables them to see ultraviolet.
258
00:20:28,920 --> 00:20:32,049
When UV rays hit some parts
of the budgie's plumage,
259
00:20:32,084 --> 00:20:33,883
they give off a reflective glow.
260
00:20:39,000 --> 00:20:42,891
It's a fair bet the female will
choose the brightest, sexiest male.
261
00:20:50,800 --> 00:20:53,087
Especially if he can fight too.
262
00:20:53,122 --> 00:20:56,084
(BIRDS SQUAWK)
263
00:21:17,800 --> 00:21:19,405
With his rival dispatched,
264
00:21:19,440 --> 00:21:22,091
the male can now get down
to the serious business
265
00:21:22,126 --> 00:21:23,570
of wooing the female.
266
00:21:28,600 --> 00:21:31,888
Not only do budgies have highly
reflective UV markings...
267
00:21:32,880 --> 00:21:35,850
.. some parts of their plumage
actually become fluorescent.
268
00:21:37,440 --> 00:21:39,727
Their necks and heads in particular.
269
00:21:44,960 --> 00:21:46,445
The feathers don't lie.
270
00:21:46,480 --> 00:21:51,281
To make sexy feathers, the male
must be healthy and parasite-free.
271
00:21:51,316 --> 00:21:56,366
These markings announce,
“My genes are great. Choose me. ”
272
00:22:11,000 --> 00:22:14,129
And if she does,
he treats her to a slap-up meal
273
00:22:14,164 --> 00:22:16,327
by regurgitating food into her mouth.
274
00:22:25,000 --> 00:22:27,383
Over a few days,
she'll lay about six eggs
275
00:22:27,418 --> 00:22:29,767
that will hatch
in just a couple of weeks.
276
00:22:34,200 --> 00:22:38,569
She feeds her blind, naked chicks
a rich milk-like liquid.
277
00:22:38,604 --> 00:22:40,369
They grow rapidly.
278
00:22:51,280 --> 00:22:54,284
Within 12 days
their wing feathers come through.
279
00:23:02,000 --> 00:23:03,885
And after only four weeks,
280
00:23:03,920 --> 00:23:05,922
they're almost ready
to leave the nest.
281
00:23:12,000 --> 00:23:15,004
Incredibly, these chicks
will be ready to breed
282
00:23:15,039 --> 00:23:17,643
in just 60 days after hatching.
283
00:23:17,678 --> 00:23:20,205
It's a superquick turnaround
284
00:23:20,240 --> 00:23:22,925
to get the young out of the nest
while the going is good.
285
00:23:29,400 --> 00:23:31,687
But it could all be over
in an instant.
286
00:23:34,960 --> 00:23:38,726
At two metres, the perentie
is Australia's largest lizard.
287
00:23:56,000 --> 00:23:59,004
(BIRDS SQUAWK)
288
00:24:02,000 --> 00:24:06,085
A tireless predator, it covers
great distances in search of food.
289
00:24:20,360 --> 00:24:22,445
The perentie tracks its prey by sight
290
00:24:22,480 --> 00:24:26,041
and by detecting scent molecules
that it picks up on its tongue.
291
00:24:51,720 --> 00:24:53,245
(BIRDS SQUAWK)
292
00:24:58,320 --> 00:25:01,210
In the air,
they're not nearly so vulnerable.
293
00:25:36,000 --> 00:25:39,845
Synchronised squadrons fly low
between the mulga trees.
294
00:25:39,880 --> 00:25:43,771
The colours on their backs
camouflage them against the grasses.
295
00:25:56,560 --> 00:26:00,326
Where the budgies go,
the birds of prey follow.
296
00:26:26,000 --> 00:26:29,288
What the hunter is looking for
is a weak link.
297
00:27:02,000 --> 00:27:04,890
But it's not always life and death
for Australia's parrots.
298
00:27:07,000 --> 00:27:09,970
Galahs seem to have plenty of time
for clowning around.
299
00:27:36,360 --> 00:27:39,605
In some years, budgies breed up
into such numbers
300
00:27:39,640 --> 00:27:43,247
that they become, for a time,
Australia's most numerous parrot.
301
00:27:57,720 --> 00:28:00,849
Accounts by early settlers
tell of flocks so big
302
00:28:00,884 --> 00:28:02,569
that they blackened the sky.
303
00:28:29,720 --> 00:28:32,485
But the good times
can only last for so long.
304
00:28:33,480 --> 00:28:37,883
And as the country dries out again,
breeding comes to a halt.
305
00:28:40,800 --> 00:28:44,725
Having raised several generations,
the budgies disperse,
306
00:28:44,760 --> 00:28:46,768
resuming their nomadic life
in the desert
307
00:28:46,803 --> 00:28:49,286
waiting for the next big rains.
308
00:28:53,480 --> 00:28:54,970
Whenever that may be.
309
00:29:05,960 --> 00:29:09,005
In contrast to the unpredictable
droughts of the interior,
310
00:29:09,040 --> 00:29:13,090
the seasons along the southern edge
of Australia are far more regular.
311
00:29:15,960 --> 00:29:19,005
In winter, Antarctic blasts
of cold air
312
00:29:19,040 --> 00:29:21,646
bring snow to Australia's
highest mountains.
313
00:29:27,680 --> 00:29:29,762
Wombats can forage in any weather.
314
00:29:34,800 --> 00:29:37,125
But it's not great weather
for parrots.
315
00:29:37,160 --> 00:29:41,370
There is one that manages
to survive above the snowline.
316
00:29:43,560 --> 00:29:48,361
Green rosellas fuel up on alpine
berries against the winter blizzards.
317
00:29:59,240 --> 00:30:03,802
Down at sea level, the cold fronts
bring gale-force winds.
318
00:30:03,837 --> 00:30:05,290
Great for surfers...
319
00:30:06,640 --> 00:30:08,768
.. treacherous for
almost anything else.
320
00:30:13,320 --> 00:30:14,805
If you're a rock parrot,
321
00:30:14,840 --> 00:30:17,571
you must learn to like your plants
heavily salted.
322
00:30:25,000 --> 00:30:27,810
Living in the salt-spray zone
is not an easy life,
323
00:30:27,845 --> 00:30:30,326
but these hardy parrots are battlers.
324
00:30:35,720 --> 00:30:39,088
Things get a little easier
in the nearby coastal heath.
325
00:30:40,080 --> 00:30:43,880
This environment is richer,
attracting gang-gang cockatoos.
326
00:30:48,000 --> 00:30:51,165
Like most cockatoos,
gang-gangs are left-footed,
327
00:30:51,200 --> 00:30:55,489
gripping onto their wind-blown perch
with their right leg,
328
00:30:55,524 --> 00:30:57,801
while holding the seed pod
with their left.
329
00:31:11,000 --> 00:31:14,125
Yellow-tailed black-cockatoos
also favour their left foot
330
00:31:14,160 --> 00:31:18,051
when tackling the large seed-bearing
cones of the banksia tree.
331
00:31:20,680 --> 00:31:23,684
It's a tricky operation
that combines brute force
332
00:31:23,719 --> 00:31:25,925
to slice through the tough exterior,
333
00:31:25,960 --> 00:31:30,887
and a delicate touch to extract
and shell the seeds that lie within.
334
00:31:37,320 --> 00:31:40,642
But the very plants
that these parrots need to survive
335
00:31:40,677 --> 00:31:42,961
must be burnt in order to regenerate.
336
00:31:45,960 --> 00:31:48,725
All this takes is a thunderstorm.
337
00:31:48,760 --> 00:31:51,724
(THUNDER RUMBLES)
338
00:31:58,400 --> 00:32:01,961
And the Australian bush
burns astonishingly fiercely.
339
00:32:03,960 --> 00:32:07,931
Banksia fruits need intense heat
to release their seeds.
340
00:32:11,000 --> 00:32:12,604
Hakea cones split.
341
00:32:15,600 --> 00:32:17,728
Gumnuts drop to the forest floor.
342
00:32:27,000 --> 00:32:30,641
Oil in the eucalyptus leaves
is as explosive as petrol.
343
00:32:40,760 --> 00:32:43,843
No other continent burns
so dramatically as Australia.
344
00:32:50,120 --> 00:32:53,090
Some fires consume
millions of hectares.
345
00:32:56,200 --> 00:32:57,690
But within hours...
346
00:32:59,200 --> 00:33:01,521
.. currawongs are poking through
the ashes.
347
00:33:04,840 --> 00:33:08,049
And crimson rosellas
that survived the inferno
348
00:33:08,084 --> 00:33:10,771
are feasting on
roasted eucalypt seeds.
349
00:33:20,760 --> 00:33:24,810
Just a few days later
eucalypts sprout green shoots.
350
00:33:36,000 --> 00:33:38,321
Within a few years
the forests recover.
351
00:33:48,600 --> 00:33:50,365
And there's plenty of food.
352
00:33:50,400 --> 00:33:53,882
So it's time for crimson rosellas
to start breeding again.
353
00:33:57,720 --> 00:33:59,325
With their bright plumage,
354
00:33:59,360 --> 00:34:02,364
parrots seem to be screaming out
to potential predators,
355
00:34:02,399 --> 00:34:04,362
“Free food - come and get it. ”
356
00:34:07,240 --> 00:34:11,086
But whether you're a budgie,
an eclectus, a rosella,
357
00:34:11,121 --> 00:34:12,565
or just about any other parrot,
358
00:34:12,600 --> 00:34:16,047
you have to take colourful risks
in the mating game.
359
00:34:35,760 --> 00:34:38,843
Sometimes you can have
the best of both worlds.
360
00:34:40,120 --> 00:34:41,965
These gaudy birds are, in fact,
361
00:34:42,000 --> 00:34:45,891
safely camouflaged by their
leaf-like shape and green backs.
362
00:34:56,440 --> 00:34:59,603
Although they haven't
quite mastered a disguise
363
00:34:59,638 --> 00:35:01,090
for the Australian suburbs.
364
00:35:03,000 --> 00:35:04,445
Ever since Australians
365
00:35:04,480 --> 00:35:06,608
started planting native trees
in their cities,
366
00:35:06,643 --> 00:35:08,090
food is laid on.
367
00:35:10,680 --> 00:35:13,604
And parrots happily accept
the invitation.
368
00:35:18,880 --> 00:35:21,360
Some overstay their welcome.
369
00:35:21,395 --> 00:35:23,805
With too much time on its hands,
370
00:35:23,840 --> 00:35:26,411
this cockatoo gets stuck into
an electric insulator.
371
00:35:31,800 --> 00:35:35,486
While the maniacal corella
will attack everything in its path.
372
00:35:37,760 --> 00:35:39,250
Even bitumen road.
373
00:35:42,360 --> 00:35:45,125
And then the neighbour's lawn.
374
00:35:47,360 --> 00:35:48,965
But such destructiveness is minor
375
00:35:49,000 --> 00:35:51,241
compared with
what they do to farmers.
376
00:35:55,000 --> 00:35:58,129
And the cockatoos love
the modern cropping practices.
377
00:36:07,000 --> 00:36:10,129
A generation ago, Lakeland
was open to intensive farming.
378
00:36:14,840 --> 00:36:17,525
It was ideal country
for maize and peanuts.
379
00:36:18,520 --> 00:36:20,205
And as the crops grew,
380
00:36:20,240 --> 00:36:22,288
the sulphur-crested cockatoos
moved in.
381
00:36:40,760 --> 00:36:45,402
In just a week the birds can inflict
tens of thousands of dollars damage
382
00:36:45,437 --> 00:36:47,767
to the maize of farmer
Darryn Hoskins.
383
00:36:47,802 --> 00:36:49,205
(Darryn whistles) Suzie.
384
00:36:49,240 --> 00:36:51,725
DARRYN: The numbers have
bred up over the years.
385
00:36:51,760 --> 00:36:54,650
The main reason for that is
'cause in their natural habitat
386
00:36:54,685 --> 00:36:57,610
they haven't got a good amount
of food all year round.
387
00:36:57,645 --> 00:36:59,685
Where, in the valley here
in Lakeland,
388
00:36:59,720 --> 00:37:02,805
even in the driest part of the year,
in August, September,
389
00:37:02,840 --> 00:37:06,606
when it's extremely dry, there's
still crop residue on the ground.
390
00:37:06,641 --> 00:37:09,885
And the birds have
got a feed all year round.
391
00:37:09,920 --> 00:37:13,003
With that they can continue to breed
12 months of the year,
392
00:37:13,038 --> 00:37:14,445
no problems at all.
393
00:37:14,480 --> 00:37:17,927
There's food and there's water here
on hand, so they've got it laid on.
394
00:37:17,962 --> 00:37:19,410
They think it's terrific.
395
00:37:21,080 --> 00:37:22,764
FRIELS: When they've finished
with the maize,
396
00:37:22,799 --> 00:37:24,723
the cookies head for
the peanut fields
397
00:37:24,758 --> 00:37:26,647
where they pick apart the hay bales.
398
00:37:26,682 --> 00:37:29,644
(BIRDS SQUAWK)
399
00:37:36,080 --> 00:37:38,651
Red-tailed black-cockatoos
join in the fun.
400
00:37:48,600 --> 00:37:50,921
So, how does the farmer
try and control them?
401
00:37:50,956 --> 00:37:53,205
DARRYN: Basically,
just driving around
402
00:37:53,240 --> 00:37:56,765
and shooting at 'em
with a high-powered rifle.
403
00:37:56,800 --> 00:38:00,904
Just the noise alone is enough to
scare 'em, or even toot the horn.
404
00:38:00,939 --> 00:38:05,008
But it's a full-time job for two,
three months of the year nonstop.
405
00:38:06,840 --> 00:38:09,203
Basically, all you're doing is
just driving around
406
00:38:09,238 --> 00:38:11,567
following the cockatoos
from one paddock to another
407
00:38:11,602 --> 00:38:13,005
until the day warms up.
408
00:38:13,040 --> 00:38:16,567
It gets too warm for 'em, so they
go back and roost in the trees.
409
00:38:16,602 --> 00:38:19,404
Then they come back again
and commence their feeding.
410
00:38:19,439 --> 00:38:21,402
Then we commence to chasing again.
411
00:38:21,437 --> 00:38:24,364
Which is bloody annoying.
412
00:38:24,399 --> 00:38:27,291
(Cocks gun and fires)
413
00:38:32,840 --> 00:38:35,844
(BIRDS SQUAWK)
414
00:38:44,840 --> 00:38:46,808
FRIELS: Further south,
in the wheat country,
415
00:38:46,843 --> 00:38:48,450
it's a different cockatoo.
416
00:38:49,440 --> 00:38:50,930
But it's the same story.
417
00:38:54,480 --> 00:38:58,690
In small doses, little corellas are
a delightful and entertaining bird.
418
00:39:04,360 --> 00:39:07,443
But when flocks of
up to 30,000 marauding birds
419
00:39:07,478 --> 00:39:09,005
descend on your harvest,
420
00:39:09,040 --> 00:39:12,931
well, you can understand why
a farmer might be a little upset.
421
00:39:15,120 --> 00:39:19,364
The grain is stored in giant bunkers
and protected by thick canvas.
422
00:39:19,399 --> 00:39:22,284
But the canvas is no match
for their sharp beaks.
423
00:39:38,280 --> 00:39:40,205
And having feasted on
the main course,
424
00:39:40,240 --> 00:39:43,323
it's off to the nearest vineyard
for a spot of dessert.
425
00:39:53,240 --> 00:39:56,965
For lychee farmers,
rainbow Lorikeets are the enemy.
426
00:39:57,000 --> 00:39:59,844
The farmers spend every daylight hour
patrolling their orchard
427
00:39:59,879 --> 00:40:01,729
to keep the birds at bay.
428
00:40:07,920 --> 00:40:11,720
Like children with cupcakes,
they take a bite from each one,
429
00:40:11,755 --> 00:40:13,484
spoiling them for everybody else.
430
00:40:24,200 --> 00:40:28,364
For the farmer, it's a race to see
who gets to the ripest fruit first.
431
00:40:33,760 --> 00:40:35,250
And the birds are winning.
432
00:40:37,400 --> 00:40:40,370
But not all farmers
are at war with parrots.
433
00:40:44,400 --> 00:40:46,205
A Queensland cattle station
434
00:40:46,240 --> 00:40:49,961
has become an unlikely refuge
for a rare turquoise beauty...
435
00:40:51,600 --> 00:40:53,728
.. the golden-shouldered parrot.
436
00:40:59,400 --> 00:41:02,085
Last century, bird fanciers
trapped these prized parrots
437
00:41:02,120 --> 00:41:03,730
and robbed their nests.
438
00:41:05,960 --> 00:41:09,123
This plunder left the species
hanging on by a thread.
439
00:41:13,120 --> 00:41:14,805
To make matters worse,
440
00:41:14,840 --> 00:41:18,811
these picky parrots have very
particular lifestyle requirements.
441
00:41:20,800 --> 00:41:24,805
For a start, a broody couple
need an airconditioned termite mound
442
00:41:24,840 --> 00:41:26,564
to burrow into and make a nest.
443
00:41:30,720 --> 00:41:33,690
They've made Sue Shephard's
cattle property home.
444
00:41:39,400 --> 00:41:41,883
And every breeding season
for 30 years
445
00:41:41,918 --> 00:41:44,367
she's been riding
hundreds of kilometres
446
00:41:44,402 --> 00:41:46,328
checking every mound for chicks.
447
00:41:56,000 --> 00:41:57,525
In half the occupied mounds,
448
00:41:57,560 --> 00:42:00,565
Sue has found the nest floor
covered with a grub
449
00:42:00,600 --> 00:42:03,649
that is unique to the nests
of golden-shouldered parrots.
450
00:42:07,480 --> 00:42:09,405
The grub belongs to a moth
451
00:42:09,440 --> 00:42:13,286
that synchronises the hatching of
her babies with that of the chicks.
452
00:42:14,280 --> 00:42:16,404
The grubs eat the chicks' poo,
453
00:42:16,439 --> 00:42:18,528
which seems to suit everyone.
454
00:42:26,360 --> 00:42:29,250
Meanwhile, the chicks' parents
go looking for food together.
455
00:42:32,800 --> 00:42:36,566
When they return, Dad flies to
the mound to check that all is safe.
456
00:42:40,960 --> 00:42:43,770
(Chirps)
457
00:42:44,760 --> 00:42:47,081
And to let the young ones know
that it's mealtime.
458
00:42:50,800 --> 00:42:53,963
He stands guard while the female
comes down to feed the chicks.
459
00:42:58,000 --> 00:43:00,245
(CHICKS SQUAWK)
460
00:43:00,280 --> 00:43:04,365
An exhausting schedule when your
chicks need four or five feeds a day.
461
00:43:19,360 --> 00:43:22,845
Dad's job is to coax
the 5-week-old chicks
462
00:43:22,880 --> 00:43:26,771
out of their cosy nest
and into the big, bad world.
463
00:43:43,960 --> 00:43:45,405
It's the dry season,
464
00:43:45,440 --> 00:43:47,568
which means it's hard
for the young birds
465
00:43:47,603 --> 00:43:49,403
to find food in the thick grass.
466
00:43:50,960 --> 00:43:52,805
So Sue helps nature along,
467
00:43:52,840 --> 00:43:55,969
burning the bush
and exposing the next meal.
468
00:44:14,400 --> 00:44:18,165
Sue's property is a haven
for the golden-shouldered parrot,
469
00:44:18,200 --> 00:44:23,161
and her efforts may be the only thing
standing between them and extinction.
470
00:44:30,960 --> 00:44:35,284
Even further north, in the remote
woodlands of Cape York Peninsula,
471
00:44:35,319 --> 00:44:38,409
there's a parrot that's
intrigued scientists for a century.
472
00:44:44,360 --> 00:44:48,160
Steve Murphy came here as
a young biologist 10 years ago.
473
00:44:49,560 --> 00:44:52,085
His quest was to
unlock the secrets
474
00:44:52,120 --> 00:44:55,727
of the world's
most spectacular cockatoo -
475
00:44:55,762 --> 00:44:57,449
the palm cockatoo.
476
00:45:18,000 --> 00:45:20,264
Few people have ever seen this bird.
477
00:45:20,299 --> 00:45:22,528
STEVE: Look here. Here he comes.
478
00:45:25,360 --> 00:45:28,364
FRIELS: The palm cockatoo dates back
tens of millions of years
479
00:45:28,399 --> 00:45:31,489
to when Australia
was covered in rainforest.
480
00:45:31,524 --> 00:45:33,562
He's the grandaddy of them all.
481
00:45:36,080 --> 00:45:38,686
Little was known
of this mysterious bird
482
00:45:38,721 --> 00:45:40,887
until Steve Murphy began his study.
483
00:45:45,960 --> 00:45:49,806
And the only way to find them in this
rainforest is to mimic their calls.
484
00:45:49,841 --> 00:45:52,965
(Calls)
485
00:45:53,000 --> 00:45:55,207
(Squawks)
(Squawks)
486
00:45:57,840 --> 00:46:00,320
(Mimics call)
487
00:46:00,355 --> 00:46:02,298
(Calls)
488
00:46:02,333 --> 00:46:04,241
(Whistles)
489
00:46:05,240 --> 00:46:06,730
(Whistles)
490
00:46:12,280 --> 00:46:15,807
STEVE: They've got a huge repertoire
of calls that they use in display.
491
00:46:15,842 --> 00:46:17,805
(Calls)
492
00:46:17,840 --> 00:46:20,810
The 'hello' call they make
is part of the display.
493
00:46:20,845 --> 00:46:22,725
It seems to be made almost as if
494
00:46:22,760 --> 00:46:25,570
they're saying hello
to their partner
495
00:46:25,605 --> 00:46:27,722
or their neighbouring cockatoos.
496
00:46:31,160 --> 00:46:35,051
FRIELS: Unlike other cockatoos,
palm cockatoos don't live in flocks.
497
00:46:36,360 --> 00:46:39,648
They pair up with a mate
and seem to stick with them for life.
498
00:46:43,840 --> 00:46:47,245
And they can live for up to 90 years.
499
00:46:47,280 --> 00:46:52,366
One cockatoo in captivity
had her first chick at 54.
500
00:46:57,920 --> 00:46:59,365
But to get the girl,
501
00:46:59,400 --> 00:47:00,965
the male must be
a man of property
502
00:47:01,000 --> 00:47:03,367
with a portfolio
of good nesting hollows.
503
00:47:03,402 --> 00:47:05,845
And if he wants any chance of mating,
504
00:47:05,880 --> 00:47:07,882
she must be persuaded
that he's strong enough
505
00:47:07,917 --> 00:47:10,247
to build her
several magnificent nests.
506
00:47:12,520 --> 00:47:15,604
STEVE: All the elements
of a palm cockatoo display
507
00:47:15,639 --> 00:47:18,688
are designed to draw attention to
that massive beak.
508
00:47:19,680 --> 00:47:22,286
The blushing of the cheek patch,
the wing spreading -
509
00:47:22,321 --> 00:47:23,725
which makes them bigger -
510
00:47:23,760 --> 00:47:28,448
it's all designed to show
other cockatoos that they're strong.
511
00:47:28,483 --> 00:47:32,047
And the pinnacle of their strength
is in their beak.
512
00:47:33,080 --> 00:47:37,324
FRIELS: Essentially, he is trying to prove
that he is a blue-chip investment,
513
00:47:37,359 --> 00:47:41,530
and that she can feel comfortable
putting all her eggs in his basket.
514
00:47:49,680 --> 00:47:53,730
STEVE: They join up every morning
and afternoon at these nest hollows.
515
00:47:56,360 --> 00:47:58,405
And they catch up on
the day's events,
516
00:47:58,440 --> 00:48:01,728
and it really does sound like
you're listening to
517
00:48:01,763 --> 00:48:03,882
an old married couple sometimes.
518
00:48:09,000 --> 00:48:10,490
I mean, the analogy continues.
519
00:48:10,525 --> 00:48:11,965
It's just like humans
520
00:48:12,000 --> 00:48:15,243
and the pride that humans have
in their houses.
521
00:48:15,278 --> 00:48:17,163
Palm cockatoos are exactly the same.
522
00:48:21,520 --> 00:48:23,365
But the most amazing display of all
523
00:48:23,400 --> 00:48:27,022
is when males bring back to the nest
a small stick.
524
00:48:27,057 --> 00:48:30,644
And they actually
drum on the side of the nest.
525
00:48:32,960 --> 00:48:35,406
FRIELS: Maybe it's because
palm cockatoos live so long
526
00:48:35,441 --> 00:48:37,801
that they have time to learn so much.
527
00:48:41,400 --> 00:48:44,125
But it's a rare thing
anywhere in the animal world
528
00:48:44,160 --> 00:48:46,850
to see a tool being used
quite this deliberately.
529
00:48:49,560 --> 00:48:51,445
STEVE: I think it's very likely
530
00:48:51,480 --> 00:48:54,324
that the female
watches these drumming displays
531
00:48:54,359 --> 00:48:57,284
and can tell something about
either the male
532
00:48:57,319 --> 00:49:00,209
or the nest tree
at which he's performing.
533
00:49:02,000 --> 00:49:03,565
You know, there's something that
she's picking up
534
00:49:03,600 --> 00:49:07,300
in the way that the drumming sound
resonates inside the hollow.
535
00:49:07,335 --> 00:49:11,000
We don't really know, but,
I mean, she watches very intently.
536
00:49:14,960 --> 00:49:18,089
FRIELS: The choosy males will try
two or three different drumsticks
537
00:49:18,124 --> 00:49:20,890
before they settle on one
that they really like.
538
00:49:31,040 --> 00:49:35,011
STEVE: When they actually perform
the drumming display at the nest,
539
00:49:35,046 --> 00:49:36,684
it does seem to have a rhythm.
540
00:49:42,880 --> 00:49:44,325
But when he's finished with it,
541
00:49:44,360 --> 00:49:47,728
he'll often sit at the edge of
the hollow and splinter up the stick
542
00:49:47,763 --> 00:49:50,371
and add it to the nesting platform
that's inside the hollow.
543
00:49:52,000 --> 00:49:53,445
FRIELS: If the female is impressed,
544
00:49:53,480 --> 00:49:56,643
she will walk down and join him
at the entrance of the nest
545
00:49:56,678 --> 00:49:58,847
to see if it's good enough
to breed in.
546
00:50:05,600 --> 00:50:09,400
With the hollow approved, they can
fly off to have a morning snack.
547
00:50:17,960 --> 00:50:20,770
The local birds gather at trees
that are in fruit.
548
00:50:24,680 --> 00:50:28,380
STEVE: That really powerful beak
that palm cockatoos have,
549
00:50:28,415 --> 00:50:32,081
which is by far the biggest beak
of any of the cockatoos,
550
00:50:32,116 --> 00:50:35,365
it allows them to eat foods
that other cockatoos
551
00:50:35,400 --> 00:50:38,722
and other animals in general
just simply can't access.
552
00:50:41,120 --> 00:50:45,091
I think palm cockatoos
are very intelligent.
553
00:50:46,200 --> 00:50:48,885
You've only gotta watch a pair
courting at their nest,
554
00:50:48,920 --> 00:50:51,285
or a male fashioning a drumstick
555
00:50:51,320 --> 00:50:54,290
to realise that there is
complicated thought
556
00:50:54,325 --> 00:50:56,328
going in that big head of theirs.
557
00:50:57,960 --> 00:51:02,090
FRIELS: Of course, these regal palm
cockatoos are not the only clever ones.
558
00:51:03,080 --> 00:51:04,684
All parrots are smart.
559
00:51:06,200 --> 00:51:08,726
Whereas most birds
only learn when they're young,
560
00:51:08,761 --> 00:51:11,365
parrots continue, through long lives,
561
00:51:11,400 --> 00:51:14,370
to accumulate knowledge
and pass it on to their mob.
562
00:51:17,200 --> 00:51:21,171
Combine this brain power with
their crafty beaks and agile toes,
563
00:51:21,206 --> 00:51:23,285
and it's almost as though parrots
564
00:51:23,320 --> 00:51:25,846
were preadapted
for this changing continent.
565
00:51:28,800 --> 00:51:32,486
From the drying of the land
to the arrival of Europeans,
566
00:51:32,521 --> 00:51:35,006
these brightest of birds
have thrived.
567
00:51:36,120 --> 00:51:39,681
.. making Australia
the land of parrots.
47534
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