It's been known for some time that some—but not all—female white-necked jacobin hummingbirds take on the brightly colored plumage worn by males. In a study published in Animal Behaviour, a team of ...

Attract a ruby-throated hummingbird in the east. See what a male, female and juvenile looks like and learn about their diet and nests.

A lot of people are familiar with the idea that many birds are color-coded by sex: males are brilliant whilst females are drab. But hummingbirds have turned this perception onto its head because in ...

When you think of a hummingbird you probably think of a small sweet bird. But, hummingbirds are also very aggressive, especially males. According to a new study, some female hummingbirds are evolving ...

Male and female White-necked Jacobins vastly differ in color, making females a target for constant harassment. But one out of every five females keeps their “male” costume, holding onto their bright ...

"This model elegantly explains this puzzling female polymorphism in one species, but also offers a framework to study testable predictions of plumage differences, or lack thereof, between sexes across ...