Male broad-tailed hummingbirds sync speed, sound, and flashing colors in a 300-millisecond dive that dazzles females during ...

When Bald Eagles pair up, they take the plunge—literally—locking talons high in the air and tumbling toward the ground, ...

Determining whether a budgerigar is male or female isn’t always obvious at first glance–yet identifying the gender is crucial ...

For anyone who hasn’t picked up the author’s Ruinous Love trilogy, be warned: Butcher & Blackbird comes with its fair share ...

The sharp, elongated bills of green hermit hummingbirds aren’t just fine-tuned for feeding; they also allow males to joust ...

People typically think about evolution as a linear process where, within a species, the classic adage of "survival of the ...

From matriarchs who guide entire herds to queens that dominate their hives, the animal kingdom is full of powerful females ...