White-winged Snowfinch (Montifringilla nivalis)
Gyrfalcon (Falco rusticolus)
Unmistakalble where there is no overlap with Snow Bunting (almost always). Anonymous brown bird with white wing patch when seen foraging on ground. Views in flight are dominated by the white on wings and tail. Fairly long-tailed and passer-like. Distinguishable from Snow Bunting in all plumages by the combination of grey head and brown back. Bill dark in breeding season, and yellowish in winter. Female similar to male but slightly duller coloured. Does not perch in trees. Erect posture and frequent tail-flicking when foraging on the ground. Flight less loose than Snow Bunting, with more frequent glides on stiff wings.
Sound:Rich repertoire. Song a staccato, variable phrase, consisting of short burst of sharp chattering in uneven tempo. The timbre is ringing, rich in harmonics and partly rolling. Among the various contact call the commonest are a high-pitched, sharp "zeet", a deeper, Brambling-like "veet, or a sparrow-like "peea". Alarm call a rolling "trr-r-r-rt", resembling Crested Tit.
Alarm, contact call, song:
Distribution:
Xeno-canto: map
Ecology:Birdlife ecology
Links:
Observation.org Latest observations
Image search Flickr NB! May give other species
CCPhoto by Paul Cools. CC-license
Largest falcon. Heavily built. Grey upperparts and white, speckled underparts. Juveniles with browner plumage than adults, blue-grey legs and longitudinal streaking below. Diffuse moustache-stripe, and the whole head seems dark at distance, lacking a defined cap. Rounder and broader wings, longer tail and bulky belly distinguishes it from Peregrine. Underside of wings with dark coverts in contrast to pale base of flight-feathers. Extremely powerful, but slower flight action than Peregrine.
Sound:A coarse, drawn out, Peregrine-like "kaaawt", with emphasis on ending, is repeated in series. Much slower paced than in small falcons, and deeper and with different attack than in Peregrine. Also shorter, coarse warning-calls.
Alarm call:
Distribution:
Xeno-canto: map
Ecology:Birdlife ecology
Links:
Observation.org Latest observations
Image search Flickr NB! May give other species
CCSounds:Recorded by Andrew Spencer,http://www.xeno-canto.org ,CC license