Species:

Barn Owl (Tyto alba)

Sooty Shearwater (Ardenna grisea)

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Length (cm):
33-35
40-51
Wingspan (cm):
80-95
94-109
Weight (gram):
240-350
666-978
Size group:
Crow-size
Crow-size
Main Texts:
Appearance:

A beautiful, very pale owl with a diagnostic, heart-shaped face and black eyes. Underparts white to buff. Buff-bellied individuals most likely to be confused with other owls, but note lack of barring and streaking. Instead the underparts may be covered in small spots. Underwing almost white. The white bellied birds may recall the much larger Snowy Owl, but has much slender wings, slender body, longer legs and protruding head. Posture upright, both on ground and when perched. Flight-pattern variable, but often hunts from low above ground in slow and buoyant flight.

Sound:

Large repertoire of mainly hissing and screeching sounds. Song consists of a single, drawn screech, lasting about a second and is often performed in flight. Starting in a very hoarse tone, then progressing with a rising pitch into a more burbling sound, before suddenly ending.

Song:

Error loading Flash for sound!
See sound file


Distribution:

Xeno-canto: map

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

Appearance:

Dark-bellied, long-billed shearwater with small head and elongated body. Wings long, narrow and pointed, with pale patches/bands underneath framed in dark base colour of body. Flight fast and powerful. In strong winds hand held pointing slightly backwards. The pale underwing is clearly visible in good light, but the whole bird often seems completely dark. Only shearwater in the region with completely dark underparts, except from dark individuals of the much smaller, and short-winged, Balearic Shearwater. The latter also shows deeper belly and less deep chest. At long distance, and/or bad weather, Sooty Shearwater may be confused with Arctic Skua or even young Gannets. Differs from Gannets by size, shorter neck and no white rump patch. Told from Skuas by bursting series of stiff wing-beats with alternating glides.

Sound:

Mostly heard at breeding ground. A peculiar, rhythmic, coarse moaning, with a disyllabic attack, followed by a deeper, cooing "in-breath".

Song:

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

CC

CC-photo:pablo_caceres_c, Licence,Link.

CC-photo:Jon. D. Anderson, Licence,Link.

Sounds:Creative Commons,www.xeno-canto.org,sjonnoh,http://creativecommons.org/licenses/by-nc-sa/4.0/

Similar species (sound):
Silhouette Group:
Owls
Silhouette
Gull-like
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