16x16 “Mr O.R.” by JoDonna Weir.One of the feistiest hummingbirds in North America. The brilliant orange male and the green-and-orange female Rufous Hummingbird are relentless attackers at flowers and feeders, going after (if not always defeating) even the large hummingbirds of the Southwest, which can be double their weight. The Rufous Hummingbird breeds as far north as southeastern Alaska – the northernmost breeding range of any hummingbird in the world. Of the western hummingbirds that occasionally show up in the east, the Rufous Hummingbird is the most frequent. The Rufous Hummingbird has an excellent memory for location, no doubt helping it find flowers from day to day, or even year to year. Some birds have been seen returning from migration and investigating where a feeder had been the previous year, even though it had since been moved. Rufous Hummingbirds, like most other hummingbirds, beat their wings extremely fast to be able to hover in place. The wingbeat frequency of Rufous Hummingbirds has been recorded at 52–62 wingbeats per second.