Hello,
Sorry about your roo
We have had a lot of trouble too. We use antibiotics from the feed store (its a yellow powder)... they have helped us many times and great to keep on hand.
What type of rooster is he? We have a similar one that we have not been able to identify.
Good luck.
Sorry about your roo

What type of rooster is he? We have a similar one that we have not been able to identify.
Good luck.