When the baby chick (duck, gosling, whatever) has muscle weakness in the legs which causes the legs to splay but is otherwise healthy, very early intervention can bring about complete recovery. The trick is to diagnose early, within a day of hatching. Very simple tools needed, I use hair ties and surgical tape. You can also use band aids, vet rx tape, or anything else that can adhere to itself and remain flexible. I like hair ties because you can get them in different sizes, they are non-irritating to the legs and they are very easy to work with.
To attach the hobble, you slip one foot into one side of the loop then secure in place with a piece of surgical tape wrapped around the hair tie. The second leg goes into the second loop and another piece of tape is wrapped to hold in place.
At first, they won't realize what is going on. They'll fuss with the hobble a bit and might crawl around for a while.
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