Hummingbirds may be tiny, but their behavior often surprises people who expect them to be gentle and easygoing. Instead of ...

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 ...

Some female hummingbirds know how to avoid the attention of aggressive males, biologists say: The girls have developed feathers that make them the spitting image of boys. Researchers studying the ...

SAN DIEGO — According to researchers, female Jacobin Hummingbirds in Central America are changing their plumage. "What we found was the ones that look like males see less aggression and we think ...

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 ...

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 ...

Hummingbirds are returning to the U.S. as the weather warms. Learn how to spot them in New Jersey and attract them to your ...

Hummingbirds with brightly colored feathers typical of males are harassed by other birds less frequently than those with drab female-colored feathers. Male coloring in one species of hummingbird gives ...

That annual northern mass migration of hummingbirds has begun, with the colorful birds already reaching North Carolina.