Swift (Apus apus)
Golden Eagle (Aquila chrysaetos)
All black swift with small white throat patch. Very difficult to separate from Pallid swift and Plain Swift. Pallid Swift; brownish plumage tone (best seen against darker background), bigger throat-patch than swift, scale pattern on body more prominent, wing-tips slightly rounded, "saddle" darker than wings, and more contrast between darker outer primaries and inner. Plain Swift; throat patch smaller and more diffuse than swift, wings and body more slender, tail noticeably deeper forked.
Sound:A shrilling trill "zreeeee" of about 1 -2 seconds length, gradually rising in pitch with accentuated firs half, then falling from the middle of phrase. Often continued with a dry lower pitched "trrrrrr" before calling again. Very vocal at breeding area, and often a flock will call together. Despite being quite similar to Pallid Swift, the call is probably the best field character to separate the two. Pallid puts the stress on the ending of the call, followed by a quick fall in pitch (dynamics like moaning with a quick release). Plain Swift calls similar to Common Swift, but differs in slightly fluctuating pitch during the call, and a loss of resonance towards the ending (thinner sounding).
Song/contact call:
Distribution:
Wikipedia: map (se also Xeno-canto below)
Ecology:Birdlife ecology
Links:
Observation.org Latest observations
Image search Flickr NB! May give other species
CCLarge, long-tailed eagle. Juveniles unmistakable, with white base of tail, dark terminal band and base of flight-feathers forming a white wing panel. Adult: dark brown with golden tinge to head. Variable amount of white wing panels and base of tail in intermediate plumages. Differs from other eagles by; wings held in shallow V when soaring, narrow wing base, flight feathers paler than coverts and body. Flight pattern elegant with a handful deep beats and typical alternate glides.
Sound:Not very vocal. A short, clear, yelping "kew". Sometimes in series in mellow tempo. Also mewing, Buzzard-like calls.
Contact call:
Distribution:
Wikipedia: map (se also Xeno-canto below)
Ecology:Birdlife ecology
Links:
Observation.org Latest observations
Image search Flickr NB! May give other species
CCSounds:Creative Commons,www.xeno-canto.org,Stein Ø. Nilsen,http://creativecommons.org/licenses/by-nc-sa/4.0/