Males of some hummingbird species may have evolved to be smaller than their female counterparts because it allows them to put on more impressive courtship displays. Sexual dimorphism – where the sexes ...

Hummingbirds are perhaps our best-loved birds, but there’s a lot that people don’t know about them. What kinds of hummingbirds are these? Do they migrate? What does their courtship look like? Right ...

Talk about showing off for your lady. During courtship flights, male Anna’s hummingbirds sustain accelerations that would cause a fighter jet pilot to pass out. Chris Clark, a biologist at the ...