I'm panicking that this is the start of Angel wing, one duck has longer feathers but they are tucked in the other two are poking out. They eat pellets, all flock that's 18% mixed evenly with a 16% type. I was feeding them a crumble til about a month ago, it was higher protein. I've seen ducks with wings wrapped, I've never had this happen before, what should I do!? The last picture is the "normal" looking one.