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grey noddy
The grey noddy or grey ternlet (''Procelsterna albivitta'') is a seabird belonging to the tern family, Sternidae. It was once regarded as a pale morph of the blue noddy (''Procelsterna cerulea'') but is now often considered to be a separate species.
==Description==
It is long with a wingspan of and a weight of about . The tail is fairly long and notched. The plumage is pale grey, almost white on the head and underparts but darker on the back, tail and wings. The wings have dark tips and a white hind edge and are mainly white underneath. The eye is black and appears large due to the black patch in front of it. There is a white patch behind the eye. The thin, pointed bill is black and the legs and feet are also black apart from pale yellow webs.
Juvenile birds are browner than the adults and have darker, more contrasting flight feathers.
The grey noddy is usually silent but has a soft, purring call.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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