Average basal metabolic rate 0.3108 W AnAge.( Farrand Jr., 1988 Palmer and Fowler, 1975)
Purple finches have more reddish color on their upper parts and are not streaked on the abdomen (Farrand, Jr. House finches may be confused with purple finches. Purple Finches have a more reddish color on their upper parts and are not streaked on their abdomens. House Finches may be confused with Purple Finches. Young house finches look similar to adult females. Females are brownish overall but may also have some pale red coloration. They have a red line over their eyes, their backs are lightly streaked in red, their abdomens are whitish and streaked with brown, and they have brown-streaked wings, sides, and tails. Females are approximately 1.3 cm shorter than males. Their wings are about 8.4 cm long and tails are about 6.6 cm long. Average adults are 14 cm long and weigh 19 to 22 g. They are also found in the open desert and desert grassland, chaparral, oak savannah, riparian areas, and open coniferous forests of the western United States, their native range. In fact, they are found almost exclusively in areas where buildings and lawns are present. In the eastern United States, house finches are highly adaptable to urban and suburban environments. House finches have also been introduced to the Hawaiian Islands. These newly established eastern populations have since become migratory, and now spend winters in the southern parts of the United States. They now occur from southern Canada south to the Gulf of Mexico, throughout the eastern seaboard and as far west as the Mississippi river. After struggling to survive for several years the population eventually became established and has spread throughout the eastern portion of the United States coast. In the 1940's a shipment of house finches was introduced into Long Island, New York. The native range of house finches extends from Oregon, Idaho and northern Wyoming to California, New Mexico and Mexico, eastward to the western portions of Nebraska, Kansas and Texas.
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