Calliope Hummingbird Identification and Size Measuring a mere 3 inches long and weighing one-tenth of an ounce, roughly the same as a table tennis ball, the Calliope hummingbird is incredibly tiny.

Though their mimicry is impressive, lyrebirds rarely mimic human-made sounds perfectly in the wild, with most recordings ...

Birds Are the Best Part of Spring We all need little signs of spring. When the wind chill dips and another bout of cold ...

Biologists previously believed modern birds had evolved 20 million years later than the new evidence suggests.

Check out a preview of the update here. It's now easier than ever to identify a bird you just saw. Enter all you were able to observe—what color was it? How big? What did its tail look like?—and Bird ...