House Finch
House Finch ( Carpodacus mexicanus ) The House Finch ( Carpodacus mexicanus ) is native to the southwestern United States and Mexico. According to BirdWeb , they prefer edge habitat and have followed human alterations and agricultural expansion. They arrived in western Washington in the 1950's and are now common throughout the state. In 1940, caged birds from the illegal pet trade were released in New York. This became a source of territory increase in the East. Bird lovers may have also played a role in their expansion. House Finch distribution is apparently associated with the presence of bird feeders. They outcompete Washington's natives, Purple and Cassin's Finches, and are the major cause of the Purple Finch's decline in western Washington. American Goldfinches, our state bird, do not seem to be similarly affected. iBird tells us that a group of House Finches is known as a "development." Male House Finches bear the rosy c...