Species:

Eagle Owl (Bubo bubo)

Yellow-billed Loon (Gavia adamsii)

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Length (cm):
60-75
76-91
Wingspan (cm):
160-188
0-0
Weight (gram):
1800-4200
4050-6400
Size group:
Bigger than a crow
Bigger than a crow
Main Texts:
Appearance:

Very large brown owl. Usually identifiable by its size and brown tones alone. Long ear-tufts usually pointing to the sides (depending on mood). Face differs from Long-eared Owl in having rather dark and brownish facial disks, and much less prominent light eye-brows. Eyes orange. Lacks the pale base of primaries of Great Grey Owl. Flight powerful and more raptorlike than other owls, interspersed with long glides. Ear-tufts foldable, and less visible in flight.

Sound:

Song a very deep "ooho". Continuous, but disyllabic. First syllable emphasized and second syllable rapidly falling in pitch. Quite similar to Long-eared Owl, but deeper and with more pronounced pitch change at end ("release"). Frequency of calls also diagnostic: Typically 8-10 seconds between each "ooho" (2-3 seconds in Long-eared Owl ). Audible at 1 - 4 km distance. Both sexes sing. Has a rich repertoire of contact/alarm calls like a hoarse, heron-like "kreaaak", and an excited, bubbling "hohohohoh".

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

Featherbase

CC

CC-photo:hehaden, Licence,Link,

CC-photo:martino.pizzol, Licence,Link,

Appearance:

Large and bulky diver with yellow or whitish, heavy bill and square head profile with steep forehead. Usually holds bill uptilted, not pointed straight like Great Northern Diver. Summer: White underparts and chequered black back. Black head and neck with white horizontal band. Winter: White underparts and grey back. Neck usually much more diffusely marked than in Great Northern Diver. Heavy goose-like flight.

Sound:

Song similar to Great Northern Diver, but slower and harsher. Not very vocal.

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:Seabamirum, Licence,Link.

CC-photo:Bering Land Bridge National Preserve, Licence,Link.

CC-sound:Andrew Spencer, Licence,Link.

CC-photo:jerryoldenettel, Licence,Link.

Similar species (image):
Silhouette Group:
Owls
Silhouette
Loons/grebes
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