Ruddy Ducks are compact, diving ducks with short necks and stiff tails that they hold upright quite often. In breeding plumage the males have blue bills, bright white cheek patches, black caps and chestnut colored bodies. The females are brown and have a brown streak across pale cheeks.
Drake Ruddy Duck In Early Breeding Plumage
I've been paying a lot of attention to a drake Ruddy Duck at my local pond because he has gone into breeding plumage earlier than is normal for this species.