Friday, 25 April 2014

Finches


The True Finches, or Fringillids, are a large group of specialized seedeaters found throughout the world. There are some lovely birds among them, including the three goldfinches of North America. Until I did some research for this web page, I admit to being confused between these fringillid finches, and other types of birds called "finches." I could never remember, for example, whether Galapagos finches were fringillids or something else (they are actually more closely related to cardinals & grosbeaks, and some even place them in their own family Geospizinae). The word "finch" is also used for some estrilids (waxbill family), some Hawaiian honeycreepers, and for a variety of emberizids and related birds. Likewise, some fringillids are termed "grosbeaks" or "seedeaters," but are not closely related to traditional grosbeaks or the widespread Neotropical seedeaters. All "finches," of whatever family, are seed eaters, but what sets the Fringillids apart are their special adaptations for dealing with seeds. Fringillids have stout conical bills, strong skulls, large jaw muscles, and powerful gizzards. All have modified beaks for holding and shelling seeds. The seed is wedged in a special groove at the side of the palate and crushed by raising the lower jaw onto it, as the Chaffinch (below right) is doing. The husk is then peeled off with the aid of the tongue, releasing the kernel which is swallowed.
» HABITAT AND RANGE:worldwide, except Australia and Pacific Islands, in woods and scrub
» DESCRIPTION:11-19 cm; bill conical, sharply pointed; wide variety of plumages with various streaking and/or red or yellow predominating; male often more colorful than female;
» FOOD:feed on seeds, buds and fruits and some insects
» BREEDING:unusual or unpredictable breeding seasons; most spp. gregarious and many nomadic; monogamous; 2-7 eggs; biparental care.

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