White Tern

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iWhite Tern

Scientific classification

Kingdom:	Animalia
Phylum:	Chordata
Class:	Aves
Order:	Charadriiformes
Family:	Sternidae
Genus:	Gygis
Species:	G. alba

Binomial name

Gygis alba
(Sparrman, 1786)

The White Tern, Gygis alba is a beautiful small seabird found across the tropical oceans of the world. Sometimes known as the Fairy Tern (but not the Fairy Tern, Sternula nereis), this small tern is famous for laying its egg on bare thin branches in a small fork or depression without a nest. This balancing act is a predator-avoidance behaviour as the branches they choose are too small for rats or even small lizards to climb. Safe from predators, but still vulnerable from strong winds, the White Terns are also quick to relay should they lose the egg. The newly hatched chicks have well developed feet to hang on to their precarious nesting site with. It is a long-lived bird, having been recorded living for 17 years.

The White Tern is a small, all white tern with a long black bill, related to the noddies. It ranges widely across the Pacific and Indian Oceans, and also nests in some Atlantic islands. It nests on coral islands, usually on trees with thin branches but also on rocky ledges and on man-made structures. The White Tern feeds on small fish which it catches by plunge diving.

The White Tern is not considered threatened as it is a wide-spread species with several large colonies around the world.

1 Subspecies
2 Gallery
3 Reference
4 External links

[edit] Subspecies

The White Tern has four subspecies: the nominate race G. a. alba, G. a. leucopes, the Pacific White Tern (G. a. candida) and the Little White Tern or Little Fairy Tern (G. a. microrhyncha).[1] The Little White Tern is often listed as a distinct species (Gygis microrhyncha).

[edit] Gallery

Chick near nest

[edit] Reference

BirdLife International (2004). Gygis alba. 2006 IUCN Red List of Threatened Species. IUCN 2006. Retrieved on 11 May 2006. Database entry includes justification for why this species is of least concern

Niethammer, K. R., and L. B. Patrick-Castilaw. 1998. White Tern (Gygis alba). in The Birds of North America, No. 371 (A. Poole and F. Gill, eds.). The Birds of North America, Inc., Philadelphia, PA.