Stock photography, photos: Ring-necked Duck Male Stock photos of Ring-necked Duck (Aythya collaris)Male Photograph: © Jack Milchanowski Click for a larger image and more information Keywords associated with this stock photo: animal, animals, aquatic bird, aquatic birds, duck, ducks, fowl, natural, natural world, nature, ornithology, untamed, water, waterfowl, web-footed, wild, wildlife, Zoology