Male Mallards with too much time on their webbed feet

The female Mallards are nesting.  Seems like the male Mallards could be bored now that they don't have the females to pal around with and chase? So, maybe for excitement this guy is balancing himself on one foot while snoozing instead of sleeping on the ground.

I guess the other 2 couldn't let the first guy continue to sleep. 

However, a fourth Mallard was sleeping in front of a nearby bench and was able to continue to sleep.

So, as far as their adventure goes, the three Mallardteers found something interesting - probably something tasty in the water- by the waters edge.  See if you can find all three of them.  Two of them are next to the rock and one is behind the rock but he blends in pretty well with the rock.