The birds (Carduelis chloris) is a well-known bird as it often visits gardens (5) and drives other birds away from feeders (6). It is a relatively heavy looking bird, with a chunky bill and a stout body (5). It can be recognised by the yellow outer-most wing feathers (the primaries) which are visible when the bird is perching, the yellow flashes on the tail, seen easily when the bird is in flight, and the greenish underparts (2). Males have a yellowish-green breast and are much more yellow than the duller greyish female (2). Juveniles are similar to females, but are streaked (5). A twittering call is produced in flight; other vocalisations include a canary-like song and a wheezy, nasal ‘dschruuuuuh’ (2)(5).
This finch uses its powerful bill to break open seeds, which it feeds on throughout the year (5). In winter the birds may form groups with other finches and buntings (3), and as natural seed stocks dwindle at this time of year, they increasingly rely on artificial food sources, such as bird tables (6).
Greenfinches nest in small colonies in trees and bushes (2) and only defend a very small area around their nest. They sing and display in spring and have a characteristic wavering display flight that shows off their yellow wing and tail flashes (5). Between four and six eggs are produced per clutch, and incubation takes up to 15 days. The young are fully fledged 18 days after hatching (3).
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