But one kind of mutant zebra finch has a yellow beak. Interestingly, many birds that are not red still have cytochrome P450 genes—to make red pigments in the retina that enhance their color vision.

Green feathers are rare, mostly created by yellow ... birds’ bodies, making yellow, red, or white. That, of course, raises the question of why those special pigments only function for eye color ...

(CBS) – A rare and colorful sighting in ... only six recorded sightings of the bird, which has a rainbow-colored appearance. The blue, green, red and yellow bird was first spotted in Pittsfield ...

With color already starting ... and poplar changing across north GA. Overlooks and ridges are still predominantly green with an occasional patch of red or yellow. Red maple, sumac, and blackgum ...

"It is unique. Basically, it is a random mutation that gives this bird its yellow color. With traditional cardinals, the male is bright red and the female is a duller." Not to be outdone by the ...

According to the Audubon Society, some of the best birding hotspots are right here in Georgia, so gear up and get ready for your best bird watching ... orchard oriole, yellow-breasted chat ...

But not all of them were the same rosy, raspberry-red color; instead, there were several light-gray birds with yellow-tinged heads and rumps. Must be the females I surmised. Need a break? Play the USA ...

Caitlin O'Kane is a New York City journalist who works on the CBS News social media team as a senior manager of content and production. She writes about a variety of topics and produces "The ...

Female birds often sport less colorful plumage than males of the ... a single gene that codes for an enzyme that destroys red and yellow pigment molecules (Science 2020, DOI: 10.1126/science.aba0803).

"It is unique. Basically, it is a random mutation that gives this bird its yellow color. With traditional cardinals, the male is bright red and the female is a duller." Not to be outdone by the ...