Some female hummingbirds don flashy feathers to avoid being bothered by other hummingbirds, a new study suggests. Beyond vying for mates, animals often also compete for territory, parental attention, ...

MALE BIRDS are often colourful and ornate. These embellishments demonstrate the wearer is a suitable candidate for fatherhood and is not to be trifled with by other males. Why females are sometimes ...

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 ...