The bluebird feeds mainly on insects and other invertebrates (such as moths, worms, flies, ants, etc.), but they will search for berries, especially in winter. You will often see them perched on wires ...

The blue jay is one of the birds we learned as children. Every yard has one of these white, black, and blue crows; if not today, then at some point during the year.

But you will still find birds at your feeder or hanging upside down on a block of suet. You can still spot the Eastern blue bird, cardinal, downy woodpecker, pileated woodpeckers, ...

Experts say it was a Northern Cardinal, but with some blue feathers instead of red. The cardinal was spotted Monday on the PixCams bird feeder camera in Murrysville, Pennsylvania.

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.

If you grind up the wing of a cardinal, the resulting powder will be red. If you do the same with a blue jay feather, the powder will be brown. You can see the same effect by simply turning around a ...

Okay, so this week's featured creature isn't really a cardinal, but it is in the same family -- cardinalis. And the blue grosbeak and the northern cardinal do resemble each other in a few ways ...

As it turns out, there aren't many blue pigments used by birds in general. So any time you see blue or purple on a bird's wing, you can suspect that at least some of it is structural color ...