Okay, I can try to get some pics. Hes a little naughty.
I do have 2 threads, the other one is different.
There are no bugs anywhere else on his body that I can see. Just the nostril.
He will barely move his neck, but he did lift his head.
He is drinking water with electrolytes in it
Still not eating.
He is in a kennel INSIDE.
Don't do solid food while he's healing up. Make it like soupy mush. This will make it easier for him. You could do really runny oatmeal, etc. Baby food kind of level.
Dry food will hurt more. That's why he's not eating it. An example of this is with dry food they will sometimes half choke and snap their head and neck back and forth to swallow better (and because they don't want to risk going to the water trough leaving all the other ducks to 'steal' all the remaining food and missing out.)
They move their necks more with solid food.
So this is why your duck isn't eating.
Go with really wet food until he's better.
For the rest of you, if you ever also get neck injuries you will also want to do wet food in the future. And you can see my reasoning above.