Wallcreeper (Tichodroma muraria)
Hooded Crow (Corvus cornix)
Unmistakable. Grey, cliff-climbing bird with long, thin and curved bill. Wings with colourful pattern in carmine red, black and white spots. Habitually flicks wings when foraging (see videolink below), but still hard to spot when not flying. Flight jerky and butterfly-like, and also recalls Hoopoe. Wings appear dark from below, except for white pearls on primaries. Male with blackish throat in breeding season.
Sound:Alarm call a thin trilling "vuiirrrrrrr". Flight call one or several soft whistles, often with (very) short trill as attack or tail. Song variable in length, but main characteristic a sequence of 4-6 long, ascending whistles with timbre recalling whistling kettle. More complex and varied phrases are mixed with the long whistles. Both male and female sings.
Song:
Distribution:
Xeno-canto: map
Ecology:Birdlife ecology
Links:
Observation.org Latest observations
Image search Flickr NB! May give other species
CCUnmistakable, if not in silhouette. In poor light or at a distance, when the grey plumage is not visible, confusion with other crows is possible. Bill is deeper than in Rook, and the upper mandible more curved towards the tip. Smaller than raven, and much less heavy bill. The wings are shorter and more rounded, and the tail is not wedge-shaped. Posture less upright than Rook.
Sound:Cawing is aggressive and more raucous than in Rook, with more rolling r's. Has a large repertoire of seldom heard calls, and even sub-song. Many of these calls are surprisingly resonant and pleasant sounding, and sometimes resembles Raven. Probably impossible to tell from Carrion Crow with certainty by sound alone.
Cawing:
Distribution:
Wikipedia: map (se also Xeno-canto below)
Ecology:Birdlife ecology
Links:
Observation.org Latest observations
Image search Flickr NB! May give other species
CC