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:

Largely unmistakable where other species of starlings don't occur. Shiny, glossy black/dark-green plumage, speckled with white dots. Yellow bill, and pinkish legs. Juveniles brownish with light throat. As they age, winter plumage breaks through the juvenile feathers, creating large dark patches with white spots. These birds frequently puzzles new birders as they are commonly seen, but often not listed in bird guides. Starlings are easily recognized on the ground by their walking gait. Flight profile also characteristic with short sharp-cornered tail and short pointed wings. May be mistaken for a Waxwing when seen in silhouette.

Sound:

Among the best of imitators. Mimics birds, animals and mechanical noises. Song a highly varied mix of falling whistles, bill-clappering and various masterful mimicry. Often makes several sounds at the same time. Other calls; a harsh "chaee" and a short sharp "tink".

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