The male has reddish forehead, breast and rump; a female house finch is streaked gray and brown above, with a lighter underside. Both sexes have brown-streaked bellies. These birds measure 5 3/4 ...

Female house finches are grayish brown with blurred streaks on their ... but several other finch species too. However, once breeding season comes around they become extremely territorial.

A few million years ago, one species of finch migrated to the rocky Galapagos from the mainland of Central or South America. From this one migrant species would come many -- at least 13 species of ...

The male house differs from the male purple finch not only by having a smaller, more curved bill, but also by lacking a distinct eyebrow, having a brown cap and auricular patch, and being heavily ...