Bohemian Waxwing

Bombycilla garrulus (Linnaeus, 1758)

2015-04-03 Tyumen	© Maksim Mitropolskiy

Description

The Bohemian Waxwing is not large, Starling-sized bird. It is unmistakable known by the specific colors and especially by the luxuriant crest which though is invisible in flight. They are grayish-brown with white and yellow wing-patches; black throat and mask and yellow terminal tail-bands. Females are very similar on males but have slightly dimmer black on head and slightly less contrast of colors. No seasonal variations of coloring. The summer juveniles are much plain and browner than adults, without dark throat patch and with a little crest. In autumn (usually in September) juveniles become almost as adults and until the next middle-summer the age is determined by the pale tips of the primaries; the adults have terminal yellow-white V-pattern; but the juveniles have only yellow, yellowish or white oblong patch on the outer web of primaries, the inner web is without white terminal strip. On males (both old and young) the yellow on the outer webs of primaries is more extensive than on females. All adult birds have the red skin (“plastic” or “waxy”) deposits on the tips of secondaries, but the number of these deposits is more on males (up to 10). Not all juveniles have these deposits, some first-year males doesn't have these deposits too. Some old males have red shafts of tail feathers, even with red deposits as on wings. The Waxwing's flight is most of all resembled the Starling flight. Weight 40-83 grams, length 19-23, wing 11,1-12,5, wingspan 30-38 cm.

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