Phenotypic characters with a complex physical basis may have a correspondingly complex evolutionary history. Males in the “bee” hummingbird clade court females with sound from tail-feathers, which ...

Many of the world's smallest hummingbirds, including the West Coast's Anna's and the East Coast's ruby-throated, execute display dives to seduce females and drive away intruders. A characteristic ...

Berkeley -- The beeps, chirps and whistles made by some hummingbirds and thought to be vocal are actually created by the birds' tail feathers, according to a study by two students at the University of ...