<P> Nests are made in cavities, including openings in buildings, hanging plants, and other cup - shaped outdoor decorations . Sometimes nests abandoned by other birds are used . Nests may be re-used for subsequent broods or in following years . The nest is built by the female, sometimes in as little as two days . It is well made of twigs and debris, forming a cup shape, usually 1.8 to 2.7 m (5.9 to 8.9 ft) above the ground . </P> <P> During courtship, the male will touch bills with the female . He may then present the female with choice bits of food, and if she mimics the behavior of a hungry chick, he may actually feed her . The male also feeds the female during breeding and incubation of the eggs, and raising of the young, and the male is the primary feeder of the fledgelings (who can be differentiated from the females by the pin feathers remaining on their heads). Females are typically attracted to the males with the deepest pigment of red to their head, more so than the occasional orange or yellowish - headed males that sometimes occur . </P> <P> The female lays clutches of eggs from February through August, two or more broods per year with 2 to 6 eggs per brood, most commonly 4 or 5 . The egg laying usually takes place in the morning, at the rate of one egg per day . The eggs are a pale bluish green with few black spots and a smooth, somewhat glossy surface . In response to mite infestation, which has a more deleterious effect on male chicks than on females, the mother finch may lay eggs containing females first, in order to reduce the length of time male chicks are exposed to mites . This strategy increases the likelihood that representative numbers of both sexes will survive . The female incubates the eggs for 12 to 14 days . Shortly after hatching, she removes the empty eggshells from the nest . The hatchlings are pink with closed eyes and tufts of fluffy down . The female always feeds the young, and the male usually joins in . The young are silent for the first seven or eight days, and subsequently start peeping during feedings . Initially, the mother carries fecal sacs out of the nest, but when the young become older, she no longer carries them all away, allowing droppings to accumulate around the edge of the nest . Before flying, the young often climb into adjacent plants, and usually fledge at about 11 to 19 days after hatching . Dandelion seeds are among the preferred seeds fed to the young . Most birds, even ones with herbivorous leanings as adults, tend to feed their nestlings animal matter in order to give them the protein necessary to grow . House finches are one of the few birds who feed their young only plant matter . </P> <P> House finches are aggressive enough to drive other birds away from places such as feeders . </P>

How long for house finch eggs to hatch
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