After a lo-o-o-ng, lonely migratory journey a male Rufous hummingbird (Selasphorus rufus) lands in the mountain meadows of the Wasatch Back just as vibrant green leaves and floral tubulars unfurl. He ...

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 ...

Known for being beautiful and fast, Hummingbirds are among the world’s smallest birds. The largest of these jewel-toned beauties weighs less than one ounce. Hummingbirds have the most rapid wing beats ...

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 ...

White-necked jacobin hummingbirds sport a colorful blue-and-white plumage as juveniles. When they grow into adulthood, males retain this dazzling pattern, while females develop a more “muted” palette ...

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 ...

We all love watching hummingbirds dart around the garden. Their dazzling feats and fancies are just spectacular! But have you ever wondered whether that tiny blur of color is a male or a female? It’s ...

1 in 5 adult female white-necked jacobin hummingbirds look like males. New research shows that this is a rare case of 'deceptive mimicry' within a species: Females with male-like plumage are trying to ...