Fighting fiddler crabs call each other's bluff

Male fiddler crabs bluff their way through fights. They also adapt their combat strategies if they have lost their original enlarged claw and have regrown a more fragile, weaker one. These are some of the findings of wildlife researchers Daisuke Muramatsu of Kyoto University and Tsunenori Koga of Wakayama University in Japan, who spent time on a mudflat watching how fiddler crabs use deception to their favour. Their study is published in Springer's journal Behavioral Ecology and Sociobiology.

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