Thanks!
I will consider making the health bars sorted by their y position; I agree that it currently looks weird when a cluster of ducks are together and health bars are covering everything. As for the duck's stubbornness, I wanted the player to move the ducks closer to the enemies so they could attack (your ducks have a limited range). I understand that putting them to sleep, pushing them, and waking them up again isn't perfect, so I am thinking of better ways of commanding ducks. I think that will help with that issue.