Out of 8 pullets that are now laying, only one actually sings the egg song after. I watched Opal lay an egg yesterday in the corner of the horse's stall and as she walked way, she started picking at the shavings. Every third shaving, she would toss it over her back. It took her a full 5 minutes to make her way across to me and the coop door. Any ideas as to what that was all about?