Ascension Frigatebird

Adlerfregattvogel ( Fregata aquila )

The Adlerfregattvogel ( Fregata aquila ) is a seabird of the family of frigate birds. It is endemic to the Ascension neighboring small island Boatswain Bird Iceland in the South Atlantic.

Description

The Adlerfregattvogel reaches a length of 89-96 centimeters. It has a wingspan of 200 centimeters and a long, forked tail. The plumage of the adult male is mainly black. The head is black with a greenish tinge. Furthermore, it is characterized by long coat springs and a greatly enlarged bright red throat pouch which is inflated like a balloon during courtship. The female is dark brown with reddish brown collar and chest coloration. The boys see the female similar, but have a white head.

Dissemination

The only breeding area is located on Boatswain Bird Iceland, a rocky island about 305 m northeast of Ascension.

Way of life

The Adlerfregattvogel feeds mainly on flying fish as Cypselurus, Hirundichthys or swallow fish ( Exocoetus volitans), which it catches on the water surface. Freshly Hatched green turtles (Chelonia mydas ) are also eaten. The mating season is not limited to a particular season, but reached its peak in October. It laid an egg.

Endangering

Until the early 19th century, the Adlerfregattvogel stocks brooded itself also at Ascension from 1815 decimated cats and rats so strong that Boatswain Bird Iceland was the last refuge for the species. Today the main threat comes from the long-line fishing. The total population is estimated at about 12,000 individuals.