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Due to heavy reconstruction of this webpage, this blog is temporary suspended to renew in this summer, it will be updated again after late-autumn, thank you for your visits in these 9 years.

1 October 2016

Red-footed Booby

Red-footed Booby (紅腳鰹鳥)
Ascension (2016)
22th February, 2016. Georgetown

Red-footed Booby is the smallest member of the booby and gannet family at about 70 cm in length and with a wingspan of up to 1m. The average weight of 490 adults from Christmas Island was 837g. It has red legs, and its bill and throat pouch are coloured pink and blue. This species has several morphs. In the white morph the plumage is mostly white (the head often tinged yellowish) and the flight feathers are black. The black-tailed white morph is similar, but with a black tail, and can easily be confused with the Nazca and masked boobies. The brown morph is overall brown. The white-tailed brown morph is similar, but has a white belly, rump, and tail. The white-headed and white-tailed brown morph has a mostly white body, tail and head, and brown wings and back. The morphs commonly breed together, but in most regions one or two morphs predominates; e.g. at the Galápagos Islands, most belong to the brown morph, though the white morph also occurs.

The sexes are similar, and juveniles are brownish with darker wings, and pale pinkish legs, while chicks are covered in dense white down.

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