Like many “western” hummingbirds, the broad-tailed is increasingly found in late fall and winter in the southeast. Polytypic (2 ssp.; nominate in North America). Length 3.5–4"; bill 16–20 mm.
Halter, a Ph.D. candidate at The University of New Mexico Department of Biology, investigates the rules for the maintenance of fat during migration in hummingbirds headed south in the fall through ...