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.

Tends to pump its tail more than other hummingbirds ... Calliope hummingbird: Adult male Calliope Hummingbirds can be identified by their long purplish-red gorget (throat) feathers, which appear ...