I bought 2 silkies a weeks ago there in there own coop and everything they have yet to lay a egg? i put in 2 eggs to try to make them lay eggs and the took them out the nesting box everyevning made a nest and put my 2 eggs in there in the morning they would get off the eggs??? how long till they lay and why do they keep puting kroger eggs in a nest and geting off??