Species:

Hawk-Owl (Surnia ulula)

Treecreeper (Certhia familiaris)

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Length (cm):
36-39
12-12
Wingspan (cm):
74-81
17-21
Weight (gram):
215-380
8-11
Size group:
Crow-size
Warbler-size
Main Texts:
Appearance:

Hawk-like, partly diurnal owl with long tail and barred underparts. Plumage gives black and white impression. White face framed in bold, vertical black stripes. Eyes bright yellow. Wings fairly short, but not rounded. Tail long and graded. Flight pattern hawk-like, with rapid series of bursting wing-beats followed by glides. Often perched in the open, exposed in tree-tops.

Sound:

Seldom heard outside breeding ground. Alarm call a sharp, merlin-like "kwitt kwitt kwitt", or "ki-ki-ki". Song a 10 second rapid pulse of shivering notes with a bubbling quality. Rising slightly in pitch and then slowly falling.

Song:

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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-sound:Eero Pätsi, Licence,Link.

Appearance:

Unmistakable, except in areas where it coexists with Short-toed Treecreeper. Differs from said species in pure white flanks (sub-species macrodactyla has faintly buff flanks but not as marked as in Short-toed), shorter and only moderately curved bill, hind-claw as long as hind-toe and "notched" wing-bar (uneven "steps"). Tips of primaries with buffish/white tips/fringes extending along inner web. Mostly distinguished from Short-toed by call, and identification exclusively by plumage characters difficult in areas where both species occur.

Sound:

Contact call a drawn, high-pitched "tzreeee". Similar to Goldcrest in timbre, but of longer duration with a vibrating and slightly rolling tone. Generally repeated in evenly paced, slow series (unlike Goldcrest). Song a short, continuous three-part phrase. Each phrase starts with a few contact call-like notes followed by a Willow Warbler-like descending part, which then jumps to a few descending high notes to form a marked conclusion. Note that "mixed singers" are not uncommon in areas where both species of treecreepers occur.

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

Similar species (image):
Similar species (sound):
Silhouette Group:
Owls
Silhouette
Tree-clinging
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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
Error loading Flash for sound!
See sound file