The Rufous-tailed Hummingbird Amazilia tzacatl, is a medium-sized hummingbird that breeds from east-central Mexico through Central America and parts of South America. It is common to abundant in open country, river-banks, woodland, scrub, forest edge, coffee plantations and gardens up to 6000 ft.
The adult Rufous-tailed Hummingbird is 4–4.8 in. The vent and rump are rufous and the slightly forked tail is rufous with a dusky tip. The almost straight bill is red with a black tip (see 4890); the black is more extensive on the upper mandible, which may appear all black.

It often acts as the bully when other hummingbirds are around. At Rancho Naturalista it kept the Snowcap at bay until we found a place without the Rufous-tailed present.

These were photographed at Rancho Naturalista, Arenal and Talari.

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