Lesser scaup and ring-necked ducks are two species of diving ducks that are similar in appearance. Both species have dark brown bodies and white bellies, and both have a white ring around their necks. However, there are some key differences between the two species.
One of the most noticeable differences between lesser scaup and ring-necked ducks is their size. Lesser scaup are smaller than ring-necked ducks, with an average weight of about 1 pound (0.45 kilograms). Ring-necked ducks, on the other hand, weigh an average of about 1.5 pounds (0.68 kilograms).