9-6-2016 ALDEAROQUETA, VALENCIA - EUROPEAN GOLDFINCH (Carduelis carduelis)

European goldfinches are monogamous and form long-lasting pair bonds. Their breeding season occurs in spring and starts in March with courtship displays. The male perches close to the female and stretches his wings while swaying from side to side, showing the bright yellow patches of the wings. The nest is built entirely by the female and is generally completed within a week. The male accompanies the female but does not contribute. The nest is neat and compact and is generally located several meters above the ground, hidden by leaves in the twigs at the end of a swaying branch. It is constructed of mosses and lichens and lined with plant down such as that from thistles. It is attached to the twigs of the tree with spider silk. A deep cup prevents the loss of eggs in windy weather. Beginning within a couple of days after the completion of the nest, the female lays a clutch of 4-6 eggs, which are whitish with reddish-brown speckles. The eggs are incubated for 11-13 days by the female, who is fed by the male. The chicks are altricial; they are born blind and naked and are fed by both parents. Initially, they receive a mixture of seeds and insects, but as they grow the proportion of insect material decreases. For the first 7-9 days, the young are brooded by the female. The nestlings fledge 13-18 days after hatching but parents continue to feed them for a further 7-9 days.