WILLIAM OSBORN / Sulphur crested cockatoo {Cacatua galerita} Queensland, Australia

WILLIAM OSBORN / Galah cockatoo, male (dark eye) {Eolophus roseicapilla} Queensland, Australia

WILLIAM OSBORN / Galah cockatoo, female (pink eye) {Eolophus roseicapilla} Queensland, Australia

WILLIAM OSBORN / Galah cockatoo, male (dark eye) {Eolophus roseicapilla} Queensland, Australia

WILLIAM OSBORN / Galah cockatoo, male (dark eye) {Eolophus roseicapilla} Queensland, Australia

WILLIAM OSBORN / Galah cockatoo, female (pink eye) {Eolophus roseicapilla} Queensland, Australia

WILLIAM OSBORN / Galah cockatoo, female (pink eye) drinking {Eolophus roseicapilla} Queensland,

WILLIAM OSBORN / Sulphur crested cockatoo {Cacatua galerita} feeding from foot, QLD, Australia

WILLIAM OSBORN / Galah cockatoo, male (dark eye) {Eolophus roseicapilla} Queensland, Australia

LYNN M. STONE / White or Umbrella cockatoo

Tony Heald / Little corella perched {Cactua sanguinea} Northern Territory, Australia

Tony Heald / Little corella at water {Cactua sanguinea} Western Australia

Sharon Heald / Red tailed black cockatoos perched {Calyptorhynchus banksii} Western Australia

Christophe Courteau / Tunicate / sea squirt {Corella parallelogramma} Brittany France

Steven David Miller / Little Corella (Cacatua sanguinea) pair perched in tree together, Mary River, Northern Territory, Australia

Steven David Miller / Little Corella (Cacatua sanguinea) pair preening, Mary River, Northern Territory, Australia

Steven David Miller / Sulphur-crested cockatoo (Cacatua galerita) perched on branch, Grampians National Park, Victoria, Australia, May

Steven David Miller / Sulphur-crested cockatoo (Cacatua galerita) perched on branch, Grampians National Park, Victoria, Australia, May

Steven David Miller / Sulphur-crested cockatoo (Cacatua galerita) perched on branch, Grampians National Park, Victoria, Australia, May

Konrad Wothe / Palm Cockatoo (Probosciger aterrimus) perched on stump in rainforest, Cape York Peninsula, North Queensland, Australia, November

Konrad Wothe / Palm Cockatoo (Probosciger aterrimus) perched on tree stump in rainforest, calling, Cape York Peninsula, North Queensland, Australia, November

Konrad Wothe / Yellow-tailed black-cockatoo (Calyptorhynchus funereus) male perched with foot held up, Queensland, Australia, captive

Konrad Wothe / Red-tailed cockatoo (Calyptorhynchus banksii) male preening, Queensland, Australia, captive

Konrad Wothe / Red-tailed cockatoo (Calyptorhynchus banksii) male preening, Queensland, Australia, captive

Konrad Wothe / Salmon-crested Cockatoo (Cacatua moluccensis) at sunset. Moluccas / Maluku Islands, Indonesia.

Dave Watts / Sulphur-crested cockatoo (Cacatua galerita) perched, Australian Capital Territory, Australia, December

Dave Watts / Sulphur-crested cockatoo (Cacatua galerita) perched, Australian Capital Territory, Australia, December

Dave Watts / Sulphur-crested cockatoo (Cacatua galerita) perched, Australian Capital Territory, Australia, December

Dave Watts / Sulphur-crested cockatoo (Cacatua galerita) perched with feather fluffed up, Australian Capital Territory, Australia, December

Kevin Schafer / Aerial view of Sulphur-crested Cockatoos (Cacatua galerita) in flight over tropical rainforest canopy, Atherton Tablelands, Queensland, Australia, November

Ernie Janes / Bird market, Hong Kong, China, January 2009

Ernie Janes / Pet Sulphur crested cockatoo (Cacatua galerita) looking at itself in mirror with crest raised, UK

Ernie Janes / Pet Sulphur crested cockatoo (Cacatua galerita) perched with crest raised, UK

Ernie Janes / Pet Sulphur crested cockatoo (Cacatua galerita) with crest raised, UK

Ernie Janes / Pet Sulphur crested cockatoo (Cacatua galerita) feeding, holding food in claws, UK

Daniel Heuclin / Philippine cockatoo (Cacatua haematuropygia) perched on tree branch, Philippines. Endemic and endangered. Captive.

Jouan & Rius / Rose breasted / Galah Cockatoo (Eolophus roseicapilla) portrait with crest raised, perched on limestone pillar, Pinnacles Desert, Pilbara region, Nambung National park, Western Australia

Jouan & Rius / Pair of Black Cockatoos (Calyptorhynchus funereus) perched in dead branch, Lesueur National Park, Western Australia

Jouan & Rius / Pair of Black Cockatoos (Calyptorhynchus funereus) perched in dead branch, Lesueur National Park, Western Australia

Jouan & Rius / Three Rose breasted / Galah Cockatoos (Eolophus roseicapilla) perched on branch, rear view. Pilbara region, Western Australia

Jouan & Rius / Rose breasted / Galah Cockatoo (Eolophus roseicapilla) perched in tree top, with crest lowered, Pilbara region, Western Australia

Jouan & Rius / Rose breasted / Galah Cockatoo (Eolophus roseicapilla) at nest hole in tree trunk, Pilbara region, Western Australia,

Jouan & Rius / Rose breasted / Galah Cockatoo (Eolophus roseicapilla) profile portrait with crest raised, Pilbara region, Western Australia

Jouan & Rius / Rose breasted / Galah Cockatoo (Eolophus roseicapilla) profile portrait with crest lowered, Pilbara region, Western Australia

Steven David Miller / Little Corella (Cacatua sanguinea) perched on branch over water, stretching wings and calling. Mungerannie, Birdsville Track, South Australia

Steven David Miller / Pair of Little Corellas (Cacatua sanguinea) on dead tree branch over water, during mating season, Mungerannie, Birdsville Track, South Australia

Steven David Miller / Pair of Little Corellas (Cacatua sanguinea) on dead tree branch over water, during mating season, Mungerannie, Birdsville Track, South Australia

Steven David Miller / Pair of Little Corellas (Cacatua sanguinea) on dead tree branch over water, during mating season, Mungerannie, Birdsville Track, South Australia Not available for ringtone/wallpaper use.

Steven David Miller / Pair of Galah cockatoos (Eolophus / Cacatua roseicapillus) female above, and male below, at nesting hole in dead tree,Coward Springs Station, Oodnadatta Track, South Australia

Mike Potts / Little Corella (Cacatua sanguinea) feeding nusing claw, Exmouth, Western Australia, November

Mike Potts / Little Corella (Cacatua sanguinea) feeding using claw, Exmouth, Western Australia, November

Mike Potts / Little Corella (Cacatua sanguinea) feeding, Exmouth, Western Australia, November

Mike Potts / Galah cockatoo (Cacatua / Eolophus roseicapilla) in flight, Kalbarri, Western Australia, November

Mike Potts / Galah cockatoo (Cacatua / Eolophus roseicapilla) two birds playing in tree, Kalbarri, Western Australia,

Mike Potts / Long billed black cockatoo (Calyptorhynchus baudinii) in flight, near Albany, Western Australia, January

Stephen Dalton / Sulphur-crested cockatoo (Cacatua galerita) in flight, controlled conditions

Stephen Dalton / Sulphur-crested cockatoo {Cacatua galerita} flight sequence, multiflash image, controlled conditions, from Australia

Andrew Walmsley / Three Sulphur crested cockatoos (Cacatua galerita) perching on park bench, Sydney Botanic gardens, Australia, August

Andrew Walmsley / Sulphur crested cockatoo (Cacatua galerita) adult peering out of nesting burrow, Sydney Botanic gardens, Australia, August

Andrew Walmsley / Sulphur crested cockatoo (Cacatua galerita) feeding on grass roots, Sydney Botanic gardens, Australia, August

Andrew Walmsley / Sulphur crested cockatoo (Cacatua galerita) playing with stick held by a tourist, Sydney Botanic gardens, Australia, August

Andrew Walmsley / Sulphur crested cockatoo (Cacatua galerita) playing with a Eucalyptus twig, Sydney Botanic gardens, Australia, August/September

Andrew Walmsley / Two Sulphur crested cockatoos (Cacatua galerita) fighting, Sydney Botanic gardens, Australia, August

Andrew Walmsley / Sulphur crested cockatoo (Cacatua galerita) lying on its back playing with a stick, Sydney Botanic gardens, Australia, August

David Tipling / Philippine / Red vented cockatoo (Cacatua haematuropygia) perched, Narra, Palawan, Philippines, critically endangered species

David Tipling / Philippine / Red vented cockatoo (Cacatua haematuropygia) in flight, Narra, Palawan, Philippines, ciritcally endangered species

LYNN M. STONE / Two Salmon crested cockatoos (Cacatua moluccensis) captive, vulnerable species

Wild Wonders of Europe / Lundgren / Tunicate (Corella parallelogramma) Moere coastline, Norway, February 2009

Tim Laman / Sulphur crested cockatoo (Cacatua galerita) calling and displaying with crest and wings extended, Queensland, Australia

Tim Laman / Sulphur crested cockatoo (Cacatua galerita) preening in tree at dawn, Queensland, Australia

Steven David Miller / Little Corella (Cacatua sanguinea gymnopis) perched, Cooper Creek, Innamincka Regional Reserve, South Australia, July

Steven David Miller / Little Corella (Cacatua sanguinea gymnopis) perched at entrance to nesting hollow, Cooper Creek, Innamincka Regional Reserve, South Australia, July

Steven David Miller / Little Corella (Cacatua sanguinea gymnopis) pair balanced on branch, drinking from creek, Cooper Creek, Innamincka Regional Reserve, South Australia, July

Steven David Miller / Galah cockatoos (Eolophus roseicapillus) Race roseicapillus, pair feeding on shrub, Cape Range National Park, Western Australia, October

Steven David Miller / Little Corella (Cacatua sanguinea gymnopis) pair greeting when one returns to nest hole, Cooper Creek, Innamincka Regional Reserve, South Australia, July

Steven David Miller / Little Corella (Cacatua sanguinea gymnopis) pair grooming, Cooper Creek, Innamincka Regional Reserve, South Australia, July

Steven David Miller / Red-tailed black cockatoo {Calyptorhynchus banksii} perched on fern stump, captive, Healesville Wildlife Sanctuary, Victoria, Australia Restrictions: Editorial use only

Steven David Miller / Sulphur-crested cockatoo {Cacatua galerita galerita} pair mutual grooming, Grampians National Park, Victoria, Australia

Steven David Miller / Sulphur-crested cockatoo {Cacatua galerita galerita} perched, Grampians National Park, Victoria, Australia

Steven David Miller / Little Corella (Cacatua sanguinea gymnopis) perched, Cooper Creek, Innamincka Regional Reserve, South Australia, July

Steven David Miller / Little Corella (Cacatua sanguinea gymnopis) perched at entrance to nesting hollow, Cooper Creek, Innamincka Regional Reserve, South Australia, July

Steven David Miller / Little Corella (Cacatua sanguinea gymnopis) pair grooming, Cooper Creek, Innamincka Regional Reserve, South Australia, July

Steven David Miller / Little Corella (Cacatua sanguinea gymnopis) pair greeting when one returns to nest hole, Cooper Creek, Innamincka Regional Reserve, South Australia, July

Steven David Miller / Sulphur-crested cockatoo {Cacatua galerita galerita} pair mutual grooming, Grampians National Park, Victoria, Australia

Steven David Miller / Red-tailed black cockatoo {Calyptorhynchus banksii} perched on fern stump, captive, Healesville Wildlife Sanctuary, Victoria, Australia Restrictions: Editorial use only

Steven David Miller / Sulphur-crested cockatoo {Cacatua galerita galerita} perched with crest raised, Grampians National Park, Victoria, Australia

Jouan & Rius / Galah / Rose-breasted cockatoo (Eolophus roseicapillus) perched in tree, Northern Territory, Australia

Jouan & Rius / Galah / Rose-breasted cockatoo (Eolophus roseicapillus) feeding in bush, Northern Territory, Australia

Jouan & Rius / Sulphur-crested cockatoo (Cacatua galerita) Grampians National Park, Victoria, Australia

Jouan & Rius / Sulphur-crested cockatoo (Cacatua galerita) feeding on wattle flowers, Grampians National Park, Victoria, Australia

Jouan & Rius / Sulphur-crested cockatoo (Cacatua galerita) Grampians National Park, Victoria, Australia

Jouan & Rius / Galah / Rose-breasted cockatoo (Eolophus roseicapillus) Victoria, Australia

Jouan & Rius / Galah / Rose-breasted cockatoo (Eolophus roseicapillus) Victoria, Australia

Jouan & Rius / Rose-Breasted / Gulah cockatoo (Eolophus roseicapilla) at nest, Victoria, Australia.

LYNN M. STONE / Salmon crested cockatoo (Cacatua moluccensis) perched on branch, portrait, captive, vulnerable species

LYNN M. STONE / Salmon crested cockatoo (Cacatua moluccensis) portrait, captive, vulnerable species