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Well he is more gimped up like his neck is all weak. He is eating though. I hope he didn't have trauma last night when I went to put him in the coop, he got his beak caught in the fence but got it unstuck. Idk how to handicap proof his coop to get in. I know he gets stressed me grabbing him every night. Somehow he makes it out but I guess thats easier to get out than to get inMarek's paralysis is somewhat different to what you might expect. It can just be a weakness where the bird can operate the limb or muscle but it takes a lot of concentration or effort, or the bird can move the limb but has no sensory feedback from it so they don't know if they are putting any pressure on the ground with a leg for instance and as a result they push harder than necessary or it may cause a muscle to extend or another to contract causing a twisting of the neck or tail as in wry neck or wry tail. Sometimes you do get what you or I would consider paralysis where a limb is motionless but more often it is a weakness which makes them appear uncoordinated or drunk. It can be very frustrating and frightening for them not to be able to coordinate their limbs all of a sudden, as that makes them very vulnerable.
I have had several birds recover from an outbreak of neurological Marek's but they always have the disease and be at risk of future attacks. It helps to think of Marek's like the cold sore virus in humans.... both are Herpes viruses. It has dormant phases and outbreaks. During the dormant phases you cannot tell who has the disease and who doesn't and they only actively shed the virus whilst they are symptomatic. We don't all have outbreaks of cold sores at the same time. Some things will be more likely to trigger an outbreak than others but even exposed to the same triggers, some people will have an outbreak and others won't. Unfortunately the Marek's virus in chickens is much more debilitating than the cold sore virus for us. I have had a couple of birds recover from 2 outbreaks of Marek's. Some do not make a full recovery but retain a slight limp or twist. I have had birds fully recover from an initial outbreak of neurological Marek's in a matter of a couple of days. Secondary attacks are usually more prolonged and I have had a few that took over 2 months of supportive care but returned to holding their own in the flock and free ranging after that.
I try not to worry about it too much these days and I certainly see less cases of it than during the first couple of years. I broody raised 46 unvaccinated chicks in 2016 and lost 3 to it and had 2 recover. I didn't raise any chicks last year (needed to get the chicken matchs in check and downsize) but of the 7 chicks I raised this summer I haven't seen any symptoms so far. I did however have a couple of older birds become symptomatic in late winter. One recovered and broody reared chicks a few months later..... so far those chicks are fine as mentioned above and are 6 months old. The other sadly went downhill and died from a secondary respiratory infection.
It is entirely possible that this rooster has been carrying the virus from being a chick and perhaps recovered from an earlier outbreak when he was young before he turned up at the OP's home and it has remained dormant in his system until now when he is suffering a second outbreak.
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