I have the same issue I purchased 7, 4 rir and 3 barred rocks 2 were grown others pol pullets that was 4 months Ago out of the 7 one egg a day I use dumar layer pellets I've got out oyster shell and grit there coop is enclosed they have a laying room in back of coop. No one is getting them no preditors we check several times a day all we every c is a rir laying around 5 in evening I'm close to using the rest for supper. I'm wasting food if there not Gonna lay