Appearance:

Large shearwater with distinct, marked, dark cap and white collar. Blotched belly and underwings. White upper tail-coverts forms a horseshoe mark, but note that Cory's Shearwater may show the same. Dark patch at side of neck. Bill dark. Flight action powerful, with alternating glides and rapid bursts of beats with stiff wings. Seldom soars.

Sound:

Calls at breeding ground a deep, soft, moaning "oooh-aahh" ("surprised or shocked old lady"). Tone fairly clear, and pitch rising and falling.

Distribution:

Wikipedia: map (se also Xeno-canto below)

Ecology:

Birdlife ecology

Links:

Observation.org Latest observations

Video IBC

Image search Flickr NB! May give other species

Sound search at Xeno-canto

CC

Appearance:

Small vulture with characteristic flight profile, and distinct plumage with white body, white coverts and black flight feathers (in adults). Long, wedge-shaped tail, but not longer than wings are broad (as opposed to Lammergeier). Wings square with broad, full hand (slightly pointed in Lammergeier). Small head with thin bill. At long distance plumage of adults slightly similar to White Pelican, White Stork and pale Booted Eagles, but note wedge-shaped tail. Immature birds dark brown with paler coverts. Despite the less distinct plumage, the silhouette is similar to adults. Noticeably more active wing flapping and quicker wing-beats than in the large vultures.

Sound:

Almost never heard. May emit different grunting sounds and a slightly mallard-like "ga ga ga ga ga ga ga".

Distribution:

Wikipedia: map (se also Xeno-canto below)

Ecology:

Birdlife ecology

Links:

Observation.org Latest observations

Video IBC

Image search Flickr NB! May give other species

Sound search at Xeno-canto

CC