I started him on B and E as soon as someone suggested it. I'm putting the electrolites with vitamins in his water (they've been getting that on and off since they arrived) and we started scrambled eggs yesterday. I don't have any probiotics on hand, but hubby is going to the store and I thought I'd have him pick some of them up along with some plain yogurt. Someone suggested that and it'd make it easier to get the vitamins down him. He's gotten so he gets upset when I try to get them in his beak and don't want to stress him any more than I have to.
He's one of 25, and we've been watching all the others closely. None of them have any symptoms at all, so if he got into something toxic, I don't know how another one didn't also. You know how they are if one has something! Same with the Marek's, you would think if that's what he has, others would have it too? Also, he's been doing the sitting all the time for at least a month now. I'm assuming because his legs were already getting shaky and weak. Doesn't Marek's make them much sicker faster than that? I've not read a lot about it because I thought we were safe with them being vaccinated.

Since I have 5 all black and 3 black with feathered legs, I guess it took me a little while to realise it was just him sitting all the time. Bad chick mom

He is eating and drinking now, but not as much as he should, since the other's are out growing him quickly. Yes, he loved the scrambled eggs, but I gave him a small handful and he ate about half of it before quitting.
There are NO avian vets anywhere near. We'd have to drive him 2 hours to Tampa to find one, at least that's what the other people with chickens near are telling me.
Trying not to get too frustrated. He was my one Marans rooster (they are so pretty) for the 2 Marans hens. The rest are mostly Bramahs (several roosters) with a couple of Welsummers, Easter Eggers, Barred Rocks and Black Australorps hens. I got a really good mix, plus the one Blue Orpington thrown in for free. All the others seem to be doing great. Almost look like full grown chickens at 12 weeks (yes, I miscounted weeks when I started this story)
Thank you again for all your help. I'm off to scramble eggs and make pies

I look so forward to you guys replies, it does help a lot!