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It is the ultimate "gentleman's agreement". Rather than compete for females, male long-tailed manakins co-operate with their friends. The tropical birds pair up to perform a courtship song and dance, but the alpha male gets the girl every time. Meanwhile his "wingman" spends five years playing second fiddle. But he eventually inherits the mating site...


 dance bird cooperation competition social Facebook evolution
From group hunting to global warming, how to deal with collective action may be formulated in terms of a public goods game of cooperation. In most cases, contributions depend on the risk of future losses. Here, we introduce an evolutionary dynamics approach to a broad class of cooperation problems in which attempting to minimize future losses turns the risk of failure into a central issue in individual decisions. We find that decisions...


 collaboration cooperation evolution social decision network