my last batch of hens where always trying to use the same nest box but they where not nice enough to wait in a line. sometimes I would come out and find 3 chickens stacked in one nest box all trying to lay their eggs, while the other two nest boxes where completely empty.
I have a hen like this, except that it seems her joint is weird because the toenail is still on top when she steps down even though her toe is bent. she does not seem to be in pain. is this the same problem?