In courtship displays some hummingbird species almost double their wingbeat frequency; others flap with a single wing. And when the Anna’s hummingbird pulls up after a stunt, it is subjected to ...

tinny pit call and twitters distinct from Anna’s. Costa’s generally plainer on throat and underparts, without dusky throat spotting. See black-chinned hummingbird.

The earliest stage of the nesting season for almost all birds is courtship, a process which is already spectacularly underway for Anna’s hummingbirds. The first and familiar element of this ...

The male Allen’s hummingbird engages in a distinctive courtship display flight ... Learn how to identify an Anna’s hummingbird. Males mate with multiple females, then a female builds her ...