Ascension Frigatebird, Southeast Bay This is a juvenile. Both male and female adults have a dark head. See: Walbridge, Grahame; Small, Brian; McGowan, Robert Y (2003). "From the Rarities Committee’s files: Ascension Frigatebird on Tiree – new to the Western Palearctic". British Birds 96 (2): 58–73. Females have a brown breast-band and sometimes a white belly.
Date 26 December 2012, 13:12:32
Source Ascension Frigatebird {Fregata aquila}
Author Drew Avery
Source: https://commons.wikimedia.org/wiki/File:Ascension_Frigatebird_female.jpg

The Ascension frigatebird (Fregata aquila) is a seabird of the frigatebird family Fregatidae which breeds on Boatswain Bird Island and Ascension Island in the tropical Atlantic Ocean. The names "frigatebird" and Fregata derive from the French mariners' name for the bird La Frégate, a frigate or fast warship. The specific aquila is Latin for an eagle, and refers to the dark plumage and rapacious habits.