If you're lucky enough to get close to one, you can identify this species by its olive-green back, reddish-brown abdomen, and whitish front and legs. Like other hummingbird moths, these intriguing ...

their uppertail coverts and tail base have more rufous (adult female rufous can be all-green); and their chip calls are slightly lower pitched. Also see female and immature calliope hummingbird ...