Although longevity of captive birds is known, the lifespan of palm cockatoos that live in the wild is still unknown.
#Goliath cockatoo Patch
The palm cockatoo also has a distinctive red cheek patch that changes colour when the bird is alarmed or excited.Īnecdotal evidence indicates a palm cockatoo reaching 80 or 90 years of age in an Australian zoo, although the oldest confirmed individual was aged 56 in London Zoo in 2000. The male has a larger beak than the female. This powerful bill enables palm cockatoos not only to eat very hard nuts and seeds, but also enables males to break off thick (about 1 in) sticks from live trees to use for a drumming display.
The lower and upper mandibles do not meet for much of its length, allowing the tongue to hold a nut against the top mandible while the lower mandible works to open it. The palm cockatoo is 22 to 24 inches in length and weighs 910–1,200 g (2.01–2.65 lb). It is a distinctive bird with a large crest and has one of the largest bills of any parrot (only the hyacinth macaw’s is larger). It may be the largest cockatoo species and largest parrot in Australia, although large races of yellow-tailed black cockatoos and sulphur-crested cockatoos broadly overlap in size. Earlier limited genetic studies found it to be the earliest offshoot from the ancestors of what have become the cockatoo family. The only member of the monotypic genus, Probosciger, the palm cockatoo is a member of the white cockatoo subfamily Cacatuinae. It is also sometimes given the misnomer “black macaw” in aviculture - the macaws are unrelated New World parrots. Its specific name, Probosciger aterrimus, is from Latin proboscis, long thin nose + -ger, carry, and Latin superlative adjective for ater, black, hence a “black with a long thin nose (beak)”. It has a very large black beak and prominent red cheek patches. The palm cockatoo ( Probosciger aterrimus), also known as the goliath cockatoo or great black cockatoo, is a large smoky-grey or black parrot of the cockatoo family native to New Guinea, Aru Islands, and Cape York Peninsula.
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