I put my ducks away in their area last night and usually my chickens go in there during the day and lay their eggs in one of the nests. I checked the nest before I put the ducks away and took all of the chicken eggs out, except two small bad ones. Well when I went to take the ducks out this morning there was another one in there, it was decent size but not what I would expect from a duck, did one of my girls lay overnight? Do they even do that?? They are 23 week old pekins. Thanks!