Greetings
Madmagic
Yes, your cockerel's posture is showing he is very ill.
It is best to provide some mild warmth for a sick bird, if it is cold where you are. But, because you have multiple cockerels, you will need to keep them together. If you separate the sick cockerel, which is usually done when a bird is sick, you will not be able to reintegrate him. The other cockerels will attack him. Even removing him overnight can make him an outsider in the flock. Do keep him out of drafts, wind and cold.
That picture of his poop is really good.
He has diarrhea, which can be caused by coccidia, which is common given his age. You have already treated for that. However, some strains are difficult to treat. Sometimes you have to repeat the treatment.
If it was something like an E. Coli infection, the Tetracycline should have helped. How long of a course did you administer the Amprollium and Tetracycline for?
The undigested feed and excess water suggests intestinal involvement. I have had good success using Albon suspension in situations like this. Albon Oral Suspension 5% contains sulfadimethoxine. A dose every 12 hours, will kill any coccidia, and/or, treat certain bacterial infections, also. So, I will start with this medication if I am not certain whether coccidia is present. You should see improvement in the stools after 48 hours of treatment, if the infection is susceptible to the sulfadimethoxine.
If there is no improvement, then another diagnosis and treatment plan is needed. If it is cold where you live, he could have congested lungs, without upper respiratory symptoms. This can also affect digestion. And, he could have more than one thing causing his illness.
Supportive Care:
- Keep him well fed, cooked egg, cooked meats, vegies, fruit like grapes etc., should supplement his feed.
- Administer a vitamin supplement to boost his immune system.
- Also, because there is excess water present in his stool, provide electrolytes in his water for three days.
- After antibiotic treatment always follow with a probiotic for a few days, to restore the intestinal flora.
A fecal float test done by any vet office, can show if there are intestinal parasites (worms/coccidia) present, and how heavy the load is.
A visit to the vet would be the very best thing for your cockerel, as I am not a vet. And he really should have someone examine him closely and listen to his lungs. But, I understand it is not always possible to have a vet's help.
Your boy has been sick a long amount of time. If he has become too weak, his ability to recover even with medical intervention, is unsure. But, do all you can to help him, he may surprise you.
These are my thoughts on your cockerels issue. I hope I have been helpful.
Other members will have advise, please consider them too.
A Blessed Christmas to you.
