Appearance:

Only in the UK. Similar to Red and Parrot Crossbill in plumage. Bill size possibly the only visual identification clue, but even this overlaps with the other two species. Bill is usually deeper and heavier than Red Crossbill. Certain separation from Parrot Crossbill in the field by visual characters alone, probably not possible. Species status mainly upheld by isolated breeding population and differences in excitement calls from other crossbills. Calls probably play an important role in maintaining the reproduction barrier between Crossbill populations with different bill-size. See Birdlife link below for more info.

Sound:

Calls very similar to Parrot Crossbill, and sonogram analysis may be needed for certain identification. Flight and excitement calls show most unique quality. Sonogram image above by Ron Summers (used with permission). A detailed article about crossbill calls can be found here.

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

Collage photo By Richard Crossley (The Crossley ID Guide Britain and Ireland) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons.

Appearance:

Rufous red face, throat and chest, framed in slate grey in adults of both sexes. Olive brown to grey upperparts and dull white underparts. Head rather large, and body rather stocky when plumage puffed, despite thin bill and slender legs. Juveniles lack the red front and are heavily spotted in buff on a dark brown body with barred chest. Adults pretty unmistakable when seen well. Flight usually low and darting, with quick changes of directions before disappearing in thick bushes. Posture usually erect with frequent flicking of tail and wings.

Sound:

Alarm call a thin, electric "tick", often in series with decelerating tempo. Song medium to very high pitched, with mostly clear tones with a liquid quality. Timbre reminiscent of Wren or Dunnock, but with a much more varied structure and tempo. Pitch ranges from very high to low, almost thrush-like, notes. No recognizable motifs. Often ends on a rising or falling pitch, giving it a "Chinese" accent.

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