Abbott's Booby
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Abbott’s Booby |
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Papasula abbotti Ridgway, 1893 |
The Abbott’s Booby (Papasula abbotti) is a large endangered seabird of the gannet family, Sulidae.
Contents |
[edit] Description
The Abbott’s Booby has a length of about 79 cm and a weight of about 1460 g. Its black and white plumage is distinct from that of other sulids in the region. Parent birds may only be able to breed from about eight years old, with successful breeding no more frequently than once every two years, and a potential lifespan of 40 years.
[edit] Distribution
It now breeds only on Christmas Island, Indian Ocean, although formerly it bred on other Indian Ocean islands. At sea it is mainly seen in the waters around Christmas Island.
[edit] Ecology
It nests in emergent trees in rainforest, laying a single egg, mainly in June or July. Growth of the chick is slow, with most chicks making their first flight in December or January, and remaining dependent on the parent birds for food for about the next 230 days. Adult birds feed on fish and squid and feed the chicks by regurgitation.
[edit] Threats
The Abbott’s Booby is considered to be an Endangered species. The population is estimated to be about 3000 birds and decreasing. On Christmas Island, threats include cyclones, degradation of breeding habitat and Yellow Crazy Ants. Offshore potential threats are overfishing and marine pollution.
[edit] References
- BirdLife International (2006) Species factsheet: Papasula abbotti. Downloaded from http://www.birdlife.org on 17/10/2006
- Marchant, S.; & Higgins, P.J. (Eds). (1990). Handbook of Australian, New Zealand and Antarctic Birds. Volume 1: Ratites to Ducks. Oxford University Press: Melbourne. ISBN 0-19-553068-3
- Nelson, J. Bryan. (1978). The Sulidae. Gannets and Boobies. Oxford University Press: Oxford. ISBN 0-19-714104-8