What is wrong with this poor duckling?

[tch314]

I recently had 4 ducklings suddenly appear in my covered pool. (The female Mallard had a hidden nest in my backyard bushes). They're probably less than a week old. All the ducklings are doing well- swimming, eating, preening, etc- but I noticed that one of them had 2 lumps on the front of its head. He seems normal in every way except that he doesn't dive like his other siblings. I don't notice any balance issues so I don't know if he has any neurological problems. I did some searching on the internet and found out about crested ducks- but this guy doesn't have any fluff on the lumps- just 2 large, bare, pinkish bumps. They're also located in the brow area- not the top or back of its head. I'm worried about the little guy and want to give him the best chance at survival. Can anyone tell me what this is and what, if anything, i can do for him? They're wild ducks btw- not pets. Thank you!

 

[nuthatched]

It's likely malformation, call your dnr or let nature take its course.

 

[tch314]

He seems fine so I don't want to call the popo on him. They would just put him down anyway.