Male and female adult Sunbitterns have can be differentiated by small differences in the feather patterns of the throat and head.

As Lucy looks up with soft eyes, beautiful in a transparent black dress adorned in feather patterns, he croons to her.

Books tell you how, with diagrams and illustrations explaining wing span and feather patterns, but everybody always gets it wrong.

The chair was draped with the gray-and-red feather pattern of Aillard.

The birds are bred so that males and females have unique feather patterns or color differences.

Students of the pigeon can identify 28 color morphs, or feather patterns.

Overall, this feather pattern looks very much like Archaeopteryx.

Judging by its asymmetrical feather pattern, similar to that of modern birds, it probably could fly in some fashion.

It has a dark greyish-brown upper head, hindneck, eyestripe and feather pattern.

A macaw's facial feather pattern is unique as a fingerprint.