Articles on Wildlife

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Muskoxen group together for security. Joel Berger

Scientist at work: Tracking muskoxen in a warming Arctic

How is rapid warming in the Arctic affecting animals that are adapted to cold? A wildlife biologist is using many techniques to find out, including stalking muskoxen in a polar bear costume.
Red-breasted Nuthatches are irrupting this winter across North America. Heather Elaine Ritchie/Flickr

When birds go roaming: The mystery of avian irruptions

During bird irruptions, hundreds or thousands of a single species show up outside their normal territory. Most of what we know about irruptions comes from data collected by citizen scientists.
Bald eagles are the best-known example of a successful recovery under the Endangered Species Act. Jerry McFarland/Flickr

For endangered species, the road to recovery can be winding and bumpy

Critics say the Endangered Species Act does not work because only about 1 percent of protected species have officially "recovered." Two biologists explain why recovery is so hard to define.
Boa constrictors are frequently found at large in Australia, despite being banned. Marcos André/flickr

Alien invaders: the illegal reptile trade is a serious threat to Australia

Keeping non-native reptiles as pets is against the law – with good reason. Alien species traded on the black market can potentially establish themselves in the wild if they are released or escape.

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