They have a special symbolism.

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 birds ...

Add Yahoo as a preferred source to see more of our stories on Google. Bright red cardinals are commonly part of Christmas cards, holiday decor and the general spirit of wintertime. This bird, called ...