Cinnamon Hummingbird vs Rufous-tailed Hummingbird

The Cinnamon Hummingbird and Rufous-tailed Hummingbird can be distinguished primarily by their tail coloration. The Cinnamon Hummingbird has a more uniform cinnamon or rufous coloration throughout its plumage, while the Rufous-tailed Hummingbird features a distinctively rufous tail contrasting with its green body.

Focus on the tail color: the Cinnamon Hummingbird has a more uniform rufous coloration, while the Rufous-tailed Hummingbird's rufous tail stands out against its green body. Observing the overall plumage tone can also help, as the Cinnamon Hummingbird tends to be more uniformly colored.

The Cinnamon Hummingbird displays a more consistent cinnamon or rufous hue across its body, whereas the Rufous-tailed Hummingbird has a vibrant green body with a contrasting rufous tail.