My baby chick's are walking funny, help!

[Morganfarms]

3 out of 12 of my baby chick's are limping and I noticed their feet are curling under... How do I help them? My 12 year old is besides herself, how do help them or is this normal?

 

[azygous]

Were these chicks vaccinated against Marek's. Problems walking is one of the first symptoms.

If your chicks happen to have a vitamin deficiency, the proper therapy may help. Curling toes can also be straightened using little cardboard chick shoes taped to their feet.

There are plenty of tutorials on these in the 'search".