He is 5 months old, eats flock raiser, gets cracked corn as a treat as well as assorted fruits and veggies-whatever we're eating that day. He acted FINE all day. I was inside for about 45 min, went back out and he was laying and his head was wobbling like he was drunk. It lasted for about 3 hours, wouldn't take water, and seemed to have no control over his head. His wings were fine, no bite marks, nothing out of the ordinary in the yard.?? The hubs said he dumped a little old birdseed to refill the feeders this morning. About an hour ago I took carried him to be with the rest of the flock (who all seem fine! He's our only mallard-2pekins and 9 chickens). He finally took some water I gave him, still no good, flapped his wings slowly, stood but still a bit wobbly, and would walk a little but slowly. I just tucked everyone in but I'm worried!!!! I have no idea what happened or what I will find in the morning. Has anyone ever had their duck act like this??