Might be, I noticed one of my drakes has the same thing, if you can catch them you might want to put some Vaseline on them to protect their skin. I sprayed Veterycin on my drakes knob since our weather has warmed a bit. Only problem is once they stick their heads into water the problem will be back.Question for all you fellow cold climate Scovy lovers.. It has been a cold one here in Norther Wisconsin so far this winter. I notice a couple of my ducks and all three of my drakes, That the bulb right above there beaks has turned really light. Almost a pale orange.. Is this frost bite ?