Oh yes, a hungry hawk will go for any bird.
Eagles go for the ducks along the river.
My birds rarely have free range any more, and their pastures have strong netting over the top. Our gander chased it off, but in trying to lift off with the duck, her neck got broke. That's why we covered the pens instead of trying to eliminate the hawks. I will say to anyone worried about hawks that since we got our gander we have a lot less problems with hawks. I have always had some sort of ducks on my place and they are free to go out to the pasture and pond.