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

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 ...

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 ...