When red-billed and yellow-billed finches mate, their offspring have orange bills. By studying the exact shade of orange in these hybrid birds, researchers could identify the different genes ...

A Hidden Camera captures a red finch resting quietly on a slender branch surrounded by fresh green leaves and developing spring catkins. Its reddish head and chest, pale underside, dark wings, short ...

Out of the thousands of bird species worldwide, the finch is just one of them, and its subspecies are found across the globe. In North America alone, there are 17 subspecies of finch, including the ...