Thanks for the reply. The eggs shells were actually pretty tough. The one I found on the coop floor looked like it had been pecked, not sure who did it though and hope its not a continual thing. Can one bird lay two eggs within a 10 hour period?GreatWhiteAfro I would say that the behavior that you described IS normal if you hens/pullets are just learning the ropes. Do you think that the texture on the shells from the busted eggs is rather thin ? That is also normal in the begining and occasionally through the laying cycle of a hen. When the system is just begining to kick in or slowing down because it need a rest.
Every once in a while one of my hens lays an egg in the middle of the run or coop. Maybe they are caught unaware that it is time to go to the nesting spot. And for some hens the process takes longer to learn. They also are truly creature of habit.