House Finches
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Description:
The House Finch (Carpodacus mexicanus) is a medium-sized finch.
Adults have a long brown tail and are a brown or dull-brown color across the back with some shading into deep grey on the wing feathers. Breast and belly feathers may be streaked. In most cases, adult males have a reddish color to their heads, necks and shoulders. This color sometimes extends to the stomach and down the back, between the wings. The male coloration varies in intensity with the seasons and is derived from the berries and fruits in its diet. As a result, the colors range from pale, straw yellow, to bright orange, to deep, intense red.
Adult females have brown upperparts and streaked underparts.
Range:
These birds are mainly permanent residents; some eastern birds migrate south. Their breeding habitat is urban and semi-open areas from southern Canada to Mexico.
Originally only a resident of Mexico and the southwestern United States, they were introcuded to eastern North America in the 1940s. The birds were being sold illegally in New York while marketed as the "Hollywood Finch." Many vendors and owners released the birds into the wild in order to avoid prosecution. The released birds spread rapidly and, in some unforested areas, have displaced the native Purple Finch. In 1870, they were introduced into Hawaii.
Diet / Feeding:
House Finches forage on the ground or in vegetation. They primarily eat grains, seeds and berries, being voracious consumers of weed seeds such as nettle and dandelion; included are incidental small insects, such as aphids and plant lice. They are frequent visitors to feeders throughout the year, particularly if stocked with sunflower seeds or Nyjer/thistle seed, and will congregate at hanging Nyjer sock feeders. They are considered a pest in fruit orchards.
Breeding / Nesting:
Nests are made in cavities, including openings in buildings, and also on various kinds of vegetation, sometimes nests abandoned by other birds will be 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 1.5m to 2m above the ground.
Eggs are laid from February through August, two or more broods per year with 2 to 6 eggs per brood. The eggs are a pale, bluish-green with few black spots and a smooth, somewhat glossy surface. The female incubates the eggs for 12 to 14 days and the young leave the nest about 11 to 19 days after hatching. Dandelion seeds are among the preferred seeds fed to the young.
During courtship, the male may present the female with choice bits of food and, if she imitates the posture of a hungry chick, he may actually feed her. The male may also feed the female during the breeding and incubation period.
House Finches are one of the few birds that are aggressive enough to keep House Sparrows out of their birdhouse and evict them.
Song / Call:
Their song is a rapid, cheery warble or a variety of chirps. A sample of their song can be heard at the USGS site here.
Copyright: Wikipedia. This article is licensed under the GNU Free Documentation License. It uses material from Wikipedia.org
Care and Feeding:
For further information, please refer to the finch websites listed under the heading or, for more general information, the below web resources are helpful:
- Sources for Purchasing or Adopting your Companion or Aviary Birds
- Optimal nutrition to keep your bird healthy
- Housing your bird / Fun & Safe Toys
- Caring for your companion bird
Related Web Resources: House Finch (Carpodacus mexicanus) ... USGS ... Birds f Nova Scotia ... Greennature.com
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