Multilevel selection is a controversial concept originally proposed by Darwin. A new study found evidence for it in the wild in a group of marmots scientists have been observing for more than 60 years.
Articles on Social relationships in animals
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Early life environments and adult social bonds both have strong effects on survival.
Despite their small size, fairy-wrens have surprisingly complex social ties. They’ll risk life and limb to help others – but only if they know them.
Top contributors
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Professor, Monash University
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Associate Research Fellow, Avian Behaviour, Deakin University
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Assistant Professor, State University of New York Oswego
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Professor of Ecology and Evolutionary Biology, Institute of the Environment and Sustainability, University of California, Los Angeles
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Executive Director, UCSB Natural Reserve System, University of California, Santa Barbara