A You may have some particularly bright males in your neighborhood. Although we tend to think of all cardinal males as being knockout red, there actually is some variation in their brightness. And ...

In birds that use red coloration as a signal, redder is better, since the intensity of the color appears to be correlated with a bird's ability to attract mates and to scare rivals.

In the bird world, the color red has special significance. Many species use red signals to attract mates or deter rivals, adding the color to their beaks, feathers, or bare skin. As far as many ...

A gene for red color vision that originated in the reptile lineage around 250m years ago has resulted in the bright red bird feathers and 'painted' turtles we see today, and may be evidence that ...

What gives an Australian finch its brilliantly colored red, yellow or orange bill? A major new study has uncovered the ...

Many red-colored birds have to convert yellow pigments in their food into the red pigments that make their feathers and beaks so brilliant. By Karen Hopkin. IMAGE 100 (MARS) ...

Instead of brightly colored cardinals, however, Minnesotans receive a little holiday cheer during the coming holidays from an assortment of other red-colored birds, including male purple finches, ...

What makes a blue jay blue or a cardinal red? Color, a crucial element in nature, is most evident in the amazing hue and pattern variations in more than 10,000 bird species around the world. How ...

A: You're right, cardinal feathers get their red pigment from the foods the birds eat, and the color is deposited before the birds molt new feathers in the fall.