Sorry about your problem.
I will throw a couple of thoughts out there. First, an antibiotic like Tylan may help with secondary problems. The Tetracycline might be alright, I am just unfamiliar with its use on peafowl. I know the Tylan is highly effective. Second, my humble opinion based upon my limited experience is that cecal worms are the fast acting killers of peafowl and should be treated with Safeguard not Ivermectin.
Since we are speculating here, I will go out on a limb and say that if you are not seeing blood in the stool, Coccidia is not your problem. If they are, and have been, eating the medicated game bird feed with Amprol or Monensin it is much more likely they got worms from either worms or bugs on the ground.
I will throw a couple of thoughts out there. First, an antibiotic like Tylan may help with secondary problems. The Tetracycline might be alright, I am just unfamiliar with its use on peafowl. I know the Tylan is highly effective. Second, my humble opinion based upon my limited experience is that cecal worms are the fast acting killers of peafowl and should be treated with Safeguard not Ivermectin.
Since we are speculating here, I will go out on a limb and say that if you are not seeing blood in the stool, Coccidia is not your problem. If they are, and have been, eating the medicated game bird feed with Amprol or Monensin it is much more likely they got worms from either worms or bugs on the ground.