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.
A research team led by Princeton's Mary Caswell Stoddard trained wild hummingbirds, like this male broad-tailed hummingbird, to perform a series of experiments that revealed that the tiny birds ...