For the past year, my flock as a whole has had low egg yields. I have 15 RIR, 1 Australorp. I just added a young Barred Rock roo, and he is doing great, getting the ladies in line and in the past few days it does seem they are laying better. I have wondered if maybe they have worms or some other sickness that lowered egg yield. Should I be giving them a yearly dewormer or doing any other maintenance on a regular basis as far as medicine goes? I had a roo that died of bumblefoot, but he didn't pass it to any, as far as I can tell. And I have one chicken who looks real rough, maybe a really late molt. Any advice would be appreciated.