Did You Know??
The feistiest hummingbird 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. Rufous Hummingbirds are wide-ranging, and breed farther north than any other hummingbird. Look for them in spring in California, summer in the Pacific Northwest and Alaska, and fall in the Rocky Mountains as they make their annual circuit of the West.
From Cornell Lab of Ornithology