I have a female Indian runner duck and she is limping I notice the knuckle just above her foot is where it is not working how should I fix it and do I in-mobilize her til it heals and for how long
broken or dislocated ankle
Ideally, you could find a good duck vet to help... I know that is not possible, always.
There is a poultry podiatry page on the poultrypedia site that has some good information.
I would give her as much time in lukewarm water deep enough to float in, to take the weight off it, and to improve circulation.
You may want to consider some kind of sling, and perhaps some kind of wrapping . Not sure exactly what might help, not being able to see what we are dealing with.
Also, please post over on the duck forum - more duck people are there.