Summary: A global study of vertebrates reveals that body temperature is the key driver behind brain size evolution. Warm-blooded species like mammals and birds can maintain the energy demands of ...

In this newsletter, beavers that parachute; the crab population off Alaska falls; fox vs. frog ... and nearly 500 species of ...

After the roseate spoonbill event in Marshfield that I wrote about last week, the “anything can happen” fall migration ...

Jim Wilson, a former national chairman of Birdwatch Ireland, says several new species have already established a foothold ...

American white pelicans breed in Canada and migrate to the United States and Mexico during cold months. But studies using weather radar and other means find that white pelicans and other snowbirds ...

Birds flying inspire awe — but how much do you know about flight? Learn which bird flies highest, which flying bird is ...

This ghostly creature landed on my window earlier this month. Was it some kind of ghost making an early Halloween appearance?

Especially when some of the world's best bird-watching can be found within America's borders, in places as pretty as northern ...

Wild Barnacle Geese only visit the UK in autumn and winter, migrating from Greenland and Svalbard to spend the colder months ...

Birds that end up far from home, like the New York common cuckoo, are known as “vagrants.” They’re fairly common during ...

Aircraft made by Boeing feature slightly different noses to those made by Airbus. This article explains how and why.

In a spot outside Berlin that’s usually a paradise for birdwatchers, volunteers have recovered nearly 2,000 dead cranes in ...