What it Sounds Like When Doves Cry
A century ago, an ornithologist proposed a system for transcribing bird sound as human speech. It did not catch on.
The Thick-Billed Parrot Is Not Extinct–Not Yet
But one hasn't been seen in the U.S. since 1995, not long after the end of the last reintroduction program.
Richard Prum: How Does Beauty Evolve?
Prum speaks on Darwin’s idea of sexual selection, the importance of arbitrary traits, and why he could never choose a favorite species of bird.
Is Human Mistreatment of Animals Killing Our Planet?
Most people treat animals as tools for improving human lives. But recent reports reveal (mis)treatment of animals is harming the planet as a whole.
Costa Rica
This Central American country was a haven for visitors long before it became a major tourist destination.
Extreme Napping in the Animal Kingdom
Although sleep is ubiquitous for animals with brains, differences in how, why, and for how long animals sleep remain unexplained.
Teddy Roosevelt Weighs in on the Evolution of Camouflage
In the years after his presidency, Roosevelt sent a letter to The Condor magazine criticizing painter Abbott Thayer's theory of animal camouflage.
Raptors Are Avian Arsonists
Raptors are proving to be great problem-solvers. Falcons, for instance, start their own fires to flush out prey.
The Curious Case of Island-Dwelling Goats
Island ecosystems are precious, precarious beasts, easily overwhelmed by nature's hardiest predator: goats.
The Color of Dinosaur Eggs
What color were dinosaur eggs? Looking at their closest cousins, birds, may give us a clue.