The Calliope Hummingbird is small even for a hummingbird, and its hunched posture makes it look even smaller. It has a short tail and short wings that barely extend past the end of the tail. The bill is thin and short for a hummingbird.
Smaller than a Black-chinned hummingbird.sparrow-sized or smaller
- Both Sexes
- Length: 3.1-3.5 in (8-9 cm)
- Weight: 0.1-0.1 oz (2.3-3.4 g)
- Wingspan: 4.1-4.3 in (10.5-11 cm)