Appearance:

Diagnostic combination of blue crown, and yellow belly makes it easily recognizable. No white tail-feathers. Sexes similar, but male slightly brighter blue. Juveniles paler than adults, with greenish crown and yellowish cheeks. One of the smallest of the tits.

Sound:

Song: Characteristic, clear, high-pitched, vibrating call. Usually introduced by a couple of accenting syllables, followed by ringing vibrating notes: "ti ti chuhuhuhuhuhuhuhuhuhu". Scolding alarm call: "tee-tee-tee-chirruwitt" similar to Great Tit.

Song:

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

Appearance:

Like a large Willow Warbler, with distinct dark eye-stripe. Supercilium marked, but narrow. Starts at base of bill, continuing far behind eye. Wing-bar distinct on greater coverts, and sometimes on median coverts too. Primary projection long. Bill long and relatively heavy with orange base. Flanks often slightly grey, and throat sometimes with faint streaking. Appearance robust, but elegant. Moves faster and with more confidence than congeners.

Sound:

Call and song diagnostic. Song a rattling series of 20-30 single syllables. Repeated as a monotonous phrase in stable pitch, lasting 2-4 seconds. Starts more softly with volume rising throughout each phrase. Contact call equally unique. A hard and short "tsrrt", recalling contact call of Dipper. Often given as introductory part of song.

Song (two variants) and calls:

Distribution:

Xeno-canto: map

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-sound:Karri Kuitunen, Licence,Link.