Twice today my duckling (12 days old) has made a noise like he was in pain, and then lay on his side is if he was paralyzed. A few seconds later he got up and ran into a wall like he was dizzy. This has happened twice now. He's been acting lethargic and has not eaten much today. I'm very concerned, it almost seems like he had a seizure.
I took a photo the second time it happened. Can anyone offer any suggestions? I'm very worried.

I took a photo the second time it happened. Can anyone offer any suggestions? I'm very worried.