Sand fiddler crabs that reside in a burrow usually prevail if challenged by another, intruding crab, provided their claw pinching strength is similar to that of the competing crab, a study suggests.

A robot crab called "Wavy Dave" has helped scientists learn about crab mating behaviors. Male fiddler crabs have one oversized claw, which they use to attract females by standing outside their burrow ...

Studies were carried out on the annual breeding period, lunar reproductive rhythm and daily activities rhythm of the western Atlantic fiddler crab Uca (Leptuca) leptodactyla Rathbun, 1898 from ...

Add Yahoo as a preferred source to see more of our stories on Google. Male fiddler crabs are small, with one oversized claw. David S. Johnson Nine years ago, I stood on the muddy banks of the Great ...