I have 17 1 to 11/2 day olds in the brooder. One tiny pullet chick has weak legs. Very perky otherwise, not spraddle legged. Just does the wing assisted low crawl. She's eating grogel+b vitamins. I've administered Nutri Drench. There's a different vitamin in the water with B's included. That's all I know to do. Anything else I can do? Just time to see if she'll get stronger?