Appearance:

Olive green upperparts, yellowish chest with gradual transition to off-white belly. Very similar to Willow Warbler, and most field characters are subtle and often hard to see. Distinguished by (usually) black, or dark-brown legs, only faint dark framing to ear-coverts, less marked supercilium. Shorter primary projection (1/2 to 2/3'rds the lenght of tertials), with regularly spaced tips (visible when wing folded). Wings more fan-shaped and less pointed than in Willow Warbler. Juveniles much less yellow below than in W.Warbler. Generally leaves a duller and greyer impression than W. Warbler, but plumage very variable. Frequently flicks tail, even sideways. Generally also more active when moving among the foliage.

Sound:

Contact/alarm call a soft, plaintive ascending "hooeet". Similar to W.Warbler, but shorter with a monosyllabic feel. Song a very distinct: "chiff-chaff-chiff-chiff-chaff-chiff", in a regular clock-like rhythm. Each syllable at seemingly random pitch, but no large intervals tonally. Sometimes "get stuck" at one note.

Contact call, 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:

Very similar to Crossbill, but has thicker neck, bigger head, hardly any forehead and deeper bill. Upper mandible is more curved towards the tip than in Crossbill, and the lower mandible is s-shaped with a "bulge". The tip of the lower mandible is seldom visible from behind the upper. The chest is deeper, and many birds have a front heavy appearance. Adult males shows most distinct characters of the species, and other sexes/ages may be difficult to identify because of overlapping characters with Crossbill. Plumage similar to Crossbill, with dark wings and tail. Males with rufous red head and body, females green. Juveniles greyish green with streaking. Posture less erect than Crossbill, which, together with short tail, contributes to the front heavy impression.

Sound:

Contact call similar to Crossbill's "chepp", but is on average deeper and lacks the "cut-off" ending of each call. In sum: Parrot Crossbill; hard attack, soft ending, Crossbill: softer attack, cut-off ending. The song consist of improvised, resonant twittering and series of contact calls with no apparent phrases. It is generally slower than in Crossbill, with marked pauses.

Song:

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

CC

Sounds:Recorded by Lauri Hallikainen http://www.xeno-canto.org/CC license