First time having chickens...sore/broken leg?

[nikkinoo]

Hi..so we got our first 3 gorgeous little chickens last week. They are around 4-5 weeks old. It seems my kids have overloved one of them mistakenly tonight and she isn't putting any weight on one of her legs. I have separated her from the others in a small box and she has her own food and water which she seems to be eating while lying down. What else would you suggest I do tonight before we go to bed please? (Live in Australia) thanks

 

[Happy Chooks]

It could have slipped a tendon in the leg. Is the knee joint swollen or red? I have not had luck fixing them, and have ended up putting the chick down. Here is a link to leg problems:
https://sites.google.com/a/larsencreek.com/chicken-orthopedics/leg-braces