what's wrong with my cornish cross?

[farmrDAN]

One of my 2 week old cornish cross chicks are having a hard time balancing with both walking and sitting. It keeps rocking back and forth before finally falling back onto it's butt. It will be almost completely sitting and then it rolls back onto it's but like in the picture and it seems like it's fighting to stay up.i know the cornish have leg problems but none of the other and even much bigger chicks are having this hard of a time. It just started today as well. Any suggestions would be great.

 

[Eggcessive]

Look it over to see if the legs are too far apart, or if one leg is turned out to the side. Look for curled toes which can be a riboflavin deficiency. There are all sorts of leg problems chickens can have, especially meat birds. Splay leg and sometimes a slipped tendon can be helped, but the earlier you intervene the more success you will have. A good poultry vitamin with trace minerals in the water may help--Avian Super Pack 1/4 tsp per 5 gallons of water is the dosage. This first link shows the different common bone disorders, while the second link has instructions on how to help the minor leg and foot problems:
http://nhjy.hzau.edu.cn/kech/synkx/dong/2bao/Bone disorders in poultry.pdf
https://sites.google.com/a/poultrypedia.com/poultrypedia/poultry-podiatry
http://www.jefferspet.com/avian-super-pack/p/AB-P1/