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.

Several hummingbirds have already been spotted in southern U.S. states. Here's when to expect them in New York.

If you’ve ever put out a bright red hummingbird feeder, you might have noticed those tiny, energetic birds zipping toward it ...