Description
(
英語
)
由World Register of Marine Species提供
Size: medium to large. Plumage: black with purple gloss; white filoplumes on head and neck when breeding. Immature brown to grey brown above, brownish white below. Bare parts: iris dark emerald; facial skin and gular pouch black; bill grey-black; feet and legs black with pink toes; eyelid black with yellow beads. Immature with dull yellow face and grey-green bill. Habitat: marine.
Brown, L.H., E.K. Urban & K. Newman. (1982). The Birds of Africa, Volume I. Academic Press, London.
