rufous

of a reddish colour

Ellipsis of rufous hummingbird.

Partners in Flight — a conservation group that tracks several species of birds, including hummingbirds — estimates that the rufous population is currently 62% smaller than it was in 1966. […] Rufouses are adapting, however, and becoming more willing to use urban feeders and gardens.

A reddish-brown colour, as of rust.