Need help - Chicken is not using her legs - with video

First thought is Marek's, for which there wouldn't be any treatment.

Second thought, and hope, is it could be coccidiosis. Not all coccidiosis produces bloody diarrhea, and it can weaken the bird such that it is unwilling to walk.

Third, it might be a vitamin deficiency for which solution is a good dose of chick saver type vitamins or baby vitamins.

Last, botulism poisoning.

If you have access to Sulmet (a sulphur drug), I would put her on that for several days to see if she picks up. I have good luck with Sulmet as it quickly treats Coccidiosis and also addresses gram negative bacteria.

But I must admit, I suspicion it may be something like Marek's.

I'll link the BYC Marek's article which also has comparison to Marek's immitators, which include vitamin deficiency (E is a big one and Vit B) and botulism.

Good luck with her. Sorry I can't help more.

LofMc

https://www.backyardchickens.com/a/the-great-big-giant-mareks-disease-faq

Hi, first, QUARANTINE HER! Then try a good multivitamin. Give it a chance and see if she has improvement. If she does not improve sadly it's likely Mareks disease. It's HIGHLY HIGHLY contagious and just about everywhere. It can even be spread In the wind . Was she vaccinated for Mareks after hatch? The hatcheries offer it for about a dollar per bird. If you incubate your eggs you can order the vaccine and do it yourself.I've done it BOTH ways and it's A LOT cheaper to have the hatchery do it, however still worth it if your incubating. I Might suggest any new birds brought onto your property be vaccinated BEFORE they arrive and given a few weeks to develop immunity BEFORE they touch your land or are around other current birds. I'm saying this because Mareks stays on the land for some time. However, like I said, Mareks is just about every where. That's why it's recommended to give the vaccine after hatch as babies.once they get older they could already be exposed so it wouldn't help much to vaccinate a already exposed bird.keep in mind it does NOT necessarily mean your other birds will show symptoms of MAREKS because they have been exposed. but it DOES mean, if this is in fact Mareks, they COULD and likely WILL be carriers of the disease. This is why I suggest new birds to be vaccinated. DO try the vitamins and see if she improves. if not and it is Mareks, learn as much as you can about the disease because knowledge is power. Many people have flocks with Mareks and manage quite well. learn as much as you can and it will help. I hope this helps you out a bit. Best of luck.

Oh gosh, you have helped me plenty! Thank you for the thorough information and suggestions!

I have started her on Kocchi-Free and Nutri Drench, which I had here. She is still eating and drinking water and she seemed to be attempting to get up. Fingers crossed!

Make sure that your vitamins contain riboflavin (vitamin B2.) Poultry Nutridrench unfortunately doesn't contain riboflavin, but most other poultry vitamins do. Riboflavin deficiency can cause sitting or walking on hocks and curling of toes which is sometimes also a sign of Mareks.

Good to know. I will see how I can get some here, thank you!

Good luck with her. Let us know how it goes.

LofMc

It breaks my heart to report there has been no improvement to her lack of leg use. She seems in good spirits, lets me pick her up and pamper her. A neighbor gave me s different supplement, and she eats well but zero improvement. I am befuddled and after three full days with no change, my hopes are quickly dwindling. I am only too grateful to you guys for the quire responses and information, this site is truly amazing.

I would give it some more time in case it is vitamin-related. Have you seen any worsening in her symptoms? In addition to the Mareks Faq posted above, here is some more info and a couple of good threads about Mareks, although we are very hopeful that it is not Mareks:
https://extension.unh.edu/resources/files/Resource000791_Rep813.pdf
http://www.thepoultrysite.com/diseaseinfo/90/mareks-disease/
http://partnersah.vet.cornell.edu/avian-atlas/#/disease/Marek's_Disease