5616 x 3744 px | 47,5 x 31,7 cm | 18,7 x 12,5 inches | 300dpi
Data acquisizione:
3 dicembre 2010
Ubicazione:
Norfolk England UK
Altre informazioni:
The average Goldfinch is 12–13 cm long with a wingspan of 21–25 cm and a weight of 14 to 19 grams. The sexes are broadly similar, with a red face, black and white head, warm brown upperparts, white underparts with buff flanks and breast patches, and black and yellow wings. On closer inspection male Goldfinches can often be distinguished by a larger, darker red mask that extends just behind the eye. In females, the red face does not reach the eye. The ivory-coloured bill is long and pointed, and the tail is forked. Goldfinches in breeding condition have a white bill, with a greyish or blackish mark at the tip for the rest of the year. Juveniles have a plain head and a greyer back but are unmistakable due to the yellow wing stripe The goldfinch's preferred food is small seeds such as those from thistles (the Latin name is from Carduus, a genus of thistles) and teasels, but insects are also taken when feeding young. It also regularly visits bird feeders in winter. Goldfinches nest in the outer twigs of tall leafy trees, or even in bamboo, laying four to six eggs, which hatch in 11–14 days. Goldfinches are commonly kept and bred in captivity around the world because of their distinctive appearance and pleasant song. The Goldfinch males are sometimes crossed with Canary females with the intention to produce male mules with beautiful singing voices, that often capture the best singing attributes of both breeds.
