(2193) Fregata ariel iredalei.
Fregata ariel iredalei Mathews, Austral Av. Record, ii, p. 121 (1914) (Aldabra).
Vernacular names. None recorded.
Description. - Male. Whole plumage black; the upper parts glossed with blue-green and the feathers of the mantle lanceolate; the lower plumage is a duller black, the feathers lanceolate and slightly glossed like those of the back with a white spot on both sides of the abdomen.
Colours of soft parts. Iris, bill and feet black in the male, red in the female; gular pouch and eyelids red.
Measurements. Wing, about 520 to 530 mm., 530 to 545 mm.; culmen, 93 to 99 mm., 100 to 102 mm.
Female. Much duller than the male, more brown, less black above and much less glossy; breast and a broad nuchal collar white suffused with rusty-red; lesser wing-coverts brown.
Young birds have the whole head and upper breast white suffused with rusty; a broad band across the lower breast; abdomen white.
Nestling in down white.
Distribution. Aldabra, Seychelles, Mascarenes, Madagascar, Keeling Is., Somali coast, Ceylon.
Nidification. There is very little on record about the breeding of the Frigate-bird but Wood-Jones found it breeding on Cocoa Keeling Island. An egg in my collection taken by him measures-60.1 x 43.1 mm. and was taken on the 10th of June.
Habits. Those of the genus.