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Juan Fernández petrel
The Juan Fernández petrel (''Pterodroma externa'') is a species of seabird in the Procellariidae family. It nests on a single island off the coast of Chile. It was previously classified as a subspecies of the white-necked petrel (''Pterodroma cervicalis''), which is found in tropical waters of the Pacific and Indian Oceans.
==Description==
The Juan Fernández petrel is a large species of gadfly petrel, long with a wingspan of and a mass of . The upperparts are dark brownish-grey and there is a black M-shaped marking across the extended wings. The underparts are white, with the underside of the wing edged is black. The face is white, with a black "cap" extending to below the eyes. The bill is black with a hooked tip and houses the tubular nostrils that are unique to Procellariiformes.
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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