Fiddlers: Who's Boss?

Fiddler Crabs, male with one large claw and one really small claw and a female with two equally sized smaller claws. We are on Chincoteague Island, and our motel sits right at the edge of the Chincoteague National Wildlife Refuge. We've rented bikes for the three days we'll be here. Lots of birds! These in my *extra are either Long-billed Dowitchers or Willets. My Shore Bird identifying skills are sorely lacking, sorry! 
15 more days! Woof Woof! :)