In the future, I suggest housing them in a brick wall-free area. Or adding some sort of padding to prevent wonky bills.They look like they all ran into a brick wall and bent their bills.
You could try fashioning a splint out of duct tape and popsicle sticks. Remove once a day so they can eat and drink and re wrap tighter until it looks like a normal duck bill again. If that doesn't work after a few days I would cull.
![]()
Better add brick walls to the "duck predator" list...