Good morning, this started to appear with our muscovies about 3 months ago. We live in a complex with a lake and there are maybe a dozen or so. It seems like it has affected all of them at one point or another. Multiple times for several. Even new born ducklings. The foot goes limp and curls and they have a severe limp for 7-10 days. We thought maybe it was something in the water, but No other bird seems to be affected. We only feed them scratch grain. A neighbor feeds them a mix with yeast and grain... we have no idea what is causing this.
