It's funny you mention that we can tell they look yellowish to ecspeacially in the snow but all my pics they look Snow White and yes they get along it strange but they will not let any of the hens in their club lol they are kings of the yard hiss bite attack our dogs and cat. They don't care for their hen friends and get jealous if I show them attention they'll run to that particular duck and chase her away. We got 2 black swed 2 buffs 4 crested 4 runners hens I just ordered 2 blue sweds and 3 more runners hens to complete flock we have them as pets and for eggs not in to the breeding though we think ducks are just awesome.