Identification of Cassin's, House and Purple Finches
The three 'red' finches are similar in appearance and can be an identification challenge.
The House Finch, Purple Finch and Cassin's Finch are three similar species sometimes referred to as the red finches, in deference the color on the males.
The House Finch is common across most of the United States.
The Purple Finch breeds across most of Canada but is common in the winter in the eastern half of the U.S., as well as along the west coast.
The Cassin's Finch is a western species. The range of Cassin's and Purple Finches seldom overlap, but common occurences do occur.
The females of the three species are easier to identify than the males.