Thank you i have cleaned it with the saline as they said and applied the antibiotic cream they gave. That is really all i can do besides spoon feeding him and syringe with water. He is inside the house comfortable as he can be. Thank you so much for your adviceYour best option for him is your vet.
If you can't afford one, then try to keep the would clean. Isolate him from other birds.
Maybe a light guaze wrap around his neck. Mainly to keep flies off of him, so you don't
get a fly strike.
Some kind of antibiotic spray on his wound area will help.
Make sure he is eating and drinking.
Hopefully someone will come along with more information to help your duck.
The information I gave you is what I would try.
I cannot put him to sleep if there is something i can do to save him. I have him in my house where he can be comfortable and am trying everything. Thank you so much for your opinion and adviceLooks like the work of a weasel. I think I would put the poor thing down. Having said that, Ladytoysdream has good advice it's worth a try. Make sure every little hole in the bird house is plugged or you will loose them all.