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Herald Petrel - BirdForum Opus

Revision as of 15:45, 8 June 2007 by Kits (talk | contribs)
Pterodroma arminjoniana

Identification

The Trinidade Petrel, Pterodroma arminjoniana, is a species of seabird and a member of the gadfly petrels. The bird is 35-39 cm in size, with a 88-102 cm wingspan.

The petrel has 2 color morphs, a dark phase and a light phase, with intergrades between the two also occurring.

Distribution

There are also 2 separate populations, one occurring in the south Pacific, sometimes seen in Hawaii; the other occurring in the south Atlantic, nesting off Brazil, with rare sightings in the Gulf Stream off the southeastern United States.

Taxonomy

The little-known Pacific subspecies Pterodroma (arminjoniana) heraldica may be a distinct species (Herald Petrel).

Habitat

It uses oceanic islands, atolls, nesting on cliff ledges, ridges or rocky slopes. On some islands, nesting birds are threatened by feral cats and rats.

Behaviour

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