Back in April I dewormed all my hens with Wazine followed up with another common dewormer (can't remember the name). Well a few weeks ago we tested them and found roundworm larva. So tis time we did Valbazen and 14 days later a second dose. The second dose was given Sunday. Today when I got home my 2 year old Buff Orphington was laying on the ground and barley able to hold her head up. We have moved her to the garage. Is there anything we should try? Her eyes are opening and closing and her comb is laying over. Any help is appreciated.