Experiments like these are vital to the scientific process, but without evidence for multilevel selection in wild animals, ...

As two field biologists interested in the evolution of behavior, we investigated multilevel selection in the wild by studying yellow-bellied marmots. Our newly published study provides support for ...

Yellow-bellied marmots prefer grasslands and meadows within the Sierra Nevada. Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations ...

The evolutionary benefits of play are unclear, since it uses energy and may put animals in the way of predators or other threats. Play in yellow-bellied marmots has a social purpose, the authors of a ...