The common chaffinch (Fringilla coelebs), usually known simply as the chaffinch, is a common and widespread small passerine bird in the finch family. The male is brightly coloured with a blue-grey cap and rust-red underparts. The female is much duller in colouring, but both sexes have two contrasting white wing bars and white sides to the tail. The male bird has a strong voice and sings from exposed perches to attract a mate.
The chaffinch breeds in much of Europe, across Asia to Siberia and in northwest Africa. The female builds a nest with a deep cup in the fork of a tree. The clutch is typically four or five eggs, which hatch in about 13 days. The chicks fledge in around 14 days, but are fed by both adults for several weeks after leaving the nest. Outside the breeding season, chaffinches form flocks in open countryside and forage for seeds on the ground. During the breeding season, they forage on trees for invertebrates, especially caterpillars, and feed these to their young. They are partial migrants; birds breeding in warmer regions are sedentary, while those breeding in the colder northern areas of their range winter further south.
The eggs and nestlings of the chaffinch are taken by a variety of mammalian and avian predators.
The chaffinch is about 14.5 cm (5.7 in) long, with a wingspan of 24.5–28.5 cm (9.6–11.2 in) and a weight of 18–29 g (0.63–1.02 oz). The adult male of the nominate subspecies has a black forehead and a blue-grey crown, nape and upper mantle. The rump is a light olive-green; the lower mantle and scapulars form a brown saddle. The side of head, throat and breast are a dull rust-red merging to a pale creamy-pink on the belly. The central pair of tail feathers are dark grey with a black shaft streak. The rest of the tail is black apart from the two outer feathers on each side which have white wedges. Each wing has a contrasting white panel on the coverts and a buff-white bar on the secondaries and inner primaries. The flight feathers are black with white on the basal portions of the vanes. The secondaries and inner primaries have pale yellow fringes on the outer web whereas the outer primaries have a white outer edge. Outside the breeding season, chaffinches mainly eat seeds and other plant material that they find on the ground. They often forage in open country in large flocks. Chaffinches seldom take food directly from plants and only very rarely use their feet for handling food. During the breeding season, their diet switches to invertebrates especially defoliating caterpillars. They forage in trees and also occasionally make short sallies to catch insects in the air. The young are entirely fed with invertebrates which include caterpillars, aphids, earwigs, spiders and the larvae of beetles.
(latin: Fringilla coelebs)
