Pyrrhuloxia birds look like cardinals; in fact ... but its head crest might trick you into thinking it is a female cardinal. There are so many colors in a cedar waxwing! They have a head crest ...

"It was one of the experiences of a lifetime," Hill said about the bird that was bright red like a male cardinal on one side and brownish white like a female ... and females look distinct, such ...

Jeffrey and Shirley Caldwell have been attracting birds for 25 years with ... by Shirley Caldwell Gynandromorphy like that in this cardinal occurs when a female egg cell develops with two nuclei ...

An expert in the behavior of cowbirds, Dr. Peer, was hoping to see whether the cardinal would behave more like a female or a male. Unfortunately, he never saw the bird ... and to look for patterns ...

Male cardinals are the deep-red color commonly associated with the bird, but female ... Others, like the one that landed in the Caldwell’s backyard, are bilateral, and look like their sex ...

So we're asking people to please be aware that females sing and to actually get a look at the bird that you're recording.” These researchers hope that more awareness of female song will lead to ...

A rare red and white cardinal in it's festive colors makes an appearance in Canada. It's unusual look is caused ... to the female's muted plumage, males are bright red birds.

All About Birds, a site by the Cornell Lab of Ornithology, features these “Cool Facts” about the Northern Cardinal: Sweet songs: Only a few female North American songbirds sing ...