Having just gone through the same thing TWICE....with our batch of 4 month old cochins and then again with our 2 month old cochins, unfortunately I am pretty sure you have roos. I feel your pain as my daughters and I were all devastated! Out of 18 cochins altogether, we sadly only ended up with 4 pullets...one of which we gave away thinking we had more girls! UGH! I wish you the best of luck.