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.

Pipilo erythrophthalmus Family: Sparrow Length: 8 inches Wingspan: 10-1/2 inches Distinctive markings: Male has a black head, ...