Saturday night we lost all but 3 of my grown birds, 3 Cubalaya(including my rooster ) and 20 of my Orphingtons, and 1 of my red stars. So we cleaned out the coop and moved my 40 babies into the coop. No problems with the 3 remaining hens bothering the chicks. Husband went up this am to let the grown girls out and 1/2 of my babies are missing and 3 are dead in the coop. The run was closed and there are no holes ANYWHERE and no way for a coon to get in or for the chicks to get out. Mind you they were in the coop all day Sunday with out any escaping, in fact we did a head count before bed and they were all there! I have a broody mom in her nest box that hasn't been TOUCHED! All the birds are the top perch....safe and sound and not touched. The crappiest part is there are NO signs of dead chicks anywhere on our land. What gives? Anyone have ideas?