Species:

Great Shearwater (Ardenna gravis)

Long-eared Owl (Asio otus)

Change species:
Main Images:
Length (cm):
43-51
35-37
Wingspan (cm):
100-118
90-100
Weight (gram):
715-950
220-370
Size group:
Crow-size
Crow-size
Main Texts:
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:

A medium sized, brown and long-winged owl, with long ear-tufts and deep orange eyes. Only half the size of Eagle Owl. Differs from the more similar Short-eared Owl by darker (orange) eyes, longer ear-tufts and heavily streaked lower belly. In flight, note paler wing-tips (only finely barred, not tipped black).

Sound:

Song a series of very deep, monotonous "hooooo"s, quite widely spaced. Uttered about once every 2-3 seconds. Sometimes rises in pitch, but with each "hoo" being constant. Rich repertoire of calls. Other sounds include; a nasal "eeeeeaaa" reminiscent of Collared Dove, nasal mewing and bill clicking.

Song, call:

Error loading Flash for sound!
See sound file


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

Featherbase

CC

CC-photo:AlexandreRoux01, Licence,Link,

Similar species (sound):
Silhouette Group:
Gull-like
Silhouette
Owls
Silhouette
Several different images of the species
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Several different sounds of the species
Error loading Flash for sound!
See sound file
Error loading Flash for sound!
See sound file