It's actually a guinea keet, but I don't think that makes much difference. I waited too long to assist this little guy in hatching, and I think that's what caused this problem. I don't think this is spraddle leg. It seems more serious than that. The toes are very curled and resistant to straightening fully. I tried to hobble the legs, but it just made him hold his legs out behind him and to the side. He can't get them under his body, he just flops over. I've never had to fix chick/duckling/keet legs or feet before, so I don't know if this is something I can actually fix. I want to help, but I'm not sure what to do.
Here is a video of how it moves.
https://photos.app.goo.gl/dQzYRfaCeGSdLd6T7
Here is a video of how it moves.
https://photos.app.goo.gl/dQzYRfaCeGSdLd6T7