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Petrel, Antarctic
Bird Info
Bird Info
Conservation status
Scientific Name:
Thalassoica antarctica
Africa, Australasia, Australia, Chile, Eastern Cape Province, Global, New Zealand, South Africa, South America, Southern Africa, Western Cape Province Read more
Related Reading
Brooke (2004) estimated the global population to number between 10,000,000 and 20,000,000 individuals. ...
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The Antarctic Petrel is the only known species in the genus Thalassoica, and is a member of the Procellariidae family, and the Procellariiformes order. Also, this Petrel along with the Snow Petrel, the Cape Petrel, both Giant Petrels, and the two species in the Fulmarus family, are considered to be a separate group from the other Procellariidae members.[ 4] They share certain identifying features. First, they have nasal passages that attach to the upper bill called naricorns. Although the nostrils on the Petrels are on the top of the upper bill. The bills of Procellariiformes are also unique in that they are split into between 7 and 9 horny plates.On Petrels, one of these plates forms the hooked portion of the upper bill. They produce a stomach oil made up of wax esters and triglycerides that is stored in the proventriculus. This is used against predators as well as an energy rich food source for chicks and for the adults during their long flights.[ 5] Finally, they also have a salt gland that is situated above the nasal passage and helps desalinate their bodies, due to the high amount of ocean water that they imbibe. It excretes a high saline solution from their nose.[ 6] ...
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