Frigatebirds can remain airborne for days at a time without landing. Here’s how they rest while flying, according to ...

You’re at the park wearing a heavy winter coat, a beanie, gloves, a scarf, and warm boots—and you’re still numb and shivering from the cold. Then you notice a robin hopping from branch to branch.

When birds sit quietly on a branch for long periods during winter, they aren’t usually sleeping, but rather conserving energy. When food is scarce, active foraging can waste valuable energy, so ...

Learn how eastern bluebirds share bird boxes in winter, what triggers this behavior, and which other backyard birds do it too ...

A: At this time of year, bald eagles congregate near open water where they can hunt for fish and the occasional duck. The Mississippi River is a reliable place to spot eagles, and you don’t have to go ...

What do trees, water, laziness and sleep deprivation have in common? It might seem like a random list of things that have no ...

Having different chronotypes, or being more active in the morning vs. afternoon, may play an important role in preserving muscle mass and strength, and metabolic health, according to a new study.

Every animal with a brain needs sleep - and even a few without a brain do, too. Humans sleep, birds sleep, whales sleep and even jellyfish sleep. Sleep is universal “even though it’s actually very ...

As the Seattle Seahawks defeated the New England Patriots, PEOPLE broke down all the star-studded, hilarious, touching and ...

These erratic fliers hold special spiritual significance for many, and those drawn in by them have learned to hold still with ...

Decades of cognitive research reveal that parrots can understand what numbers represent. Here’s how these birds use them to ...