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:

Medium sized bunting, resembling a compact Yellowhammer in shape. Head green with yellow markings and underparts orange-brown. Distinct and characteristic, yellow eye-ring and earth-brown (not rufous) rump in all plumages. Female like male, but duller coloured, with streaked head and chest.

Sound:

Distinct bunting-like timbre with very prominent harmonics. Song simple, but varies from region to region. Sometimes structurally similar to yellowhammer, but slower, more melancholic, and with more clearly audible harmonics f.ex. "tze-ti tze-ti tze-ti tweeeee". Beginning with repeated alternating notes (tze-ti) and ending on a lower note fading out with a rising pitch. Sometimes without the ending note (like yellowhammer). Calls: a vaguely House Sparrow-like "chepp", with a ringing quality, and a sharper cut-off "zeep".

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

Featherbase

CC

CC-photo:Mick Sway, Licence,Link.