Grey-headed Chickadee (Poecile cinctus)
White-winged Tern (Chlidonias leucopterus)
Like a Willow Tit with dark brown hood, brown back and warm brown flanks. Fluffy overall look, with very large dark bib. Summer plumage often looks "newly washed" and untidy. Tail slightly longer than in Willow Tit, and flight is less undulating. Not shy.
Sound:Voice quite similar to Willow Tit. Song: Often vibrating or rasping notes repeated in Willow Tit-like structure, gradually falling in pitch "trrrrrr trrrrr trrrrr". Call: Nasal Willow Tit-like "chee chee chee" , "ti ti chee". Other sounds: Chirping, bubbling sounds resembling Willow Tit, various other high pitched sounds.
Song:
Distribution:
Wikipedia: map (se also Xeno-canto below)
Ecology:Birdlife ecology
Links:
Observation.org Latest observations
Image search Flickr NB! May give other species
CCBreeding adult easily identified by white tail/rump combined with jet black under wing coverts and silvery upper wing. Immature with brownish back contrasting with pale, silvery upper wings and pale rump. Broad white collar, and lacks dark breast patch of immature Black Tern. Adult winter most liable to confusion with other terns, but upperparts much paler than Black Tern. Contrasting dark outer primaries and secondaries to rest of wing. Often retains some black under coverts even in winter which is diagnostic if seen. Slightly more compact than Black Tern and often recalls Little gull in shape. Bill noticeably shorter and thinner than in Whiskered Tern.
Sound:Mostly silent away from breeding ground. Most diagnostic call a dry, rolling "krrrrrr-ta-ta" where the rolling is followed by one or two accentuated syllables, or just simply "krrrrrr". Used in excitement.
Call:
Distribution:
Xeno-canto: map
Ecology:Birdlife ecology
Links:
Observation.org Latest observations
Image search Flickr NB! May give other species
CCCC-sound:Marco Dragonetti, Licence,Link.