I have a week old baby chick that was fine yesterday, but today he appears bloated and swollen. So swollen he's walking bowlegged and his wings are puffed away from his body. See below. Other than looking like someone filled him up with an air, he's acting totally normal. Eating and hard to catch. I checked his vent and its clean, so it doesn't appear to be a pasting problem. He doesn't seem to be in any distress. Thoughts on this? I have seen all sorts of issues with chicks, but never this! Holding him in my hand...this is him relaxed. Notice everything is puffed out. Again, his body feels fluid filled and mushy. A comparison shot of one his siblings. Note the difference.