Hi I have 12 hens one rooster and it was 8 at night and getting dark when all the other hens were going and getting ready to roost there was that one hen that always goes in last to roost and for some odd reason she was singing the egg laying song but why she was not in the coop or the laying box and she did not lay an egg there was no predator that I could see and she did not lay why was she singing the song