Ok I have 7 goslings ranging from 2-3 weeks old. Two now have foot/leg problems and I need to know why it is happening. I thought of Niacin deficiency but that doesn't really fit as both have shown up very suddenly, eg. at bedtime the gosling is fine, in the morning it is crippled. Symptoms as follows: A week ago one little goose suddenly had a bad foot one morning. Her toes on that foot were curled up, so the foot was a fist. She's one of the smallest and we thought someone had probably sat on her leg all night and strained it. She couldn't walk on it, and it seemed as if the back tendons were contracted and tight, and it was a little painful to straighten. I worked it and massaged it, and straightened it a little at a time over a few hours until I could splint it and hold her foot out flat. I kept her separate from the other goslings in a hutch with 3 young chickens who wouldn't bully her. After a few days her foot seemed much better, and I took the splint off. Her center toenail was still curled down, but with the splint off that corrected itself within a few hours. She is now walking on a normal foot. This morning I found another gosling in similar trouble, but much worse. This little gander is another small one. He has one foot curled into a fist like the first one, and both hocks stiffened in the bent position. He cannot stand at all, he sits on his bent hocks with his feet sticking up. I've got him in a basket inside now ... (yes I know I need to get him some better non-slip bedding as he is currently on a newspaper for the photo). I'm not sure how to splint this one as if I splint his hocks he won't be able to sit down, and probably not walk either. The way his hocks are looks like niacin ... but it happened overnight, which doesn't fit. Also the first girl corrected without change of diet. They are on commercial chick starter feed. It appears unlike the "spraddle leg" caused by physical flooring issues, as the legs are contracted, not slipping out sideways. They are on an ark on the lawn, they climb a short ramp into their box which has a wooden floor. They have not been seen having any problems with the flooring, in fact they seem to have good grip. We wondered if they were getting too cold at night ... although they always seem nice and warm and comfortable when checked on. I cannot find any suggestion of cold causing leg trouble anyway. We wondered whether something (Rat?) was bothering them at night. The hutch by all accounts should be rodent proof. It must be said I heard some cheeping at one time last night, but it didn't seem alarmed or upset, and there is no sign of injuries which I would expect if they had been attacked. Also if a predator was coming by I would think the 3 week old chickens next to them would be attacked.