I am so confused on what’s wrong with my gander’s beak. I’m thinking maybe a possible nutrient deficiency or injury? He currently eats a mix of oats, cracked corn, and flock raiser feed, and then grass whenever he’s out grazing. His beak is crusty and brown in certain spots, almost like he has a scab. In other spots it’s just peeling and brown. None of my other ducks and geese seem to have this problem as of right now. Does anyone have any clue what’s going on?