Learn how to distinguish a Cassin’s finch from other finch look-alikes. Find out what these western finches eat and where to ...

The key genes change the chemical structure of the pigment molecule through the actions of an enzyme which adds just one atom ...

The attractive house finch is one of the more common and recognizable ... Male: the breast, rump, and front of the head are typically red, but the color can vary to orange or occasionally yellow.

Sometimes the most common things are extraordinarily beautiful, especially if we just slow down and really take a look. The ...

Generally lighter pink than other Haemorhous finches, with distinctive fine streaking on the undertail coverts. Male: a bright pinkish-red crown contrasts sharply with a brown streaked nape.

It’s that time of year again. Fall migration is essentially over and, while we’ll miss most of the colorful bird species we ...

and the opposite in finches, from bright yellow to bright red. The evolution of colour in birds has been the focus of attention since Charles Darwin used them in outlining his theory of evolution ...