April 23 (UPI) --The heads of Gouldian finches feature one of three different colors: yellow, red and black. Now, scientists know why the pressures of natural selection have failed to erase the ...

Ithaca, NY--There appears to be an underlying selection mechanism at work among Gouldian Finches--a mechanism that allows this species to produce and maintain individuals with red heads, black heads, ...

A highly endangered rainbow-colored Australian finch is breaking all the rules when it comes to avian evolution, according to new research published today by scientists from CU Boulder, the Cornell ...

An international team of scientists has figured out why Gouldian Finches continue to feature three different colors: red, yellow, and black. In a study, they explained that another evolutionary ...

There appears to be an underlying selection mechanism at work among Gouldian finches -- a mechanism that allows this species to produce and maintain individuals with red heads, black heads, and yellow ...