Aythya

Has special oil glands which they use to waterproof their feathers

A genus of diving ducks that is widely recognized for its robust and adaptable members, which can be found across various freshwater lakes, rivers, and ponds around the world. This group includes several species, such as the canvasback, redheads, and scaups, which are particularly popular among bird watchers and nature enthusiasts for their striking appearances and interesting behaviors.

One of the defining features of Aythya ducks is their excellent diving ability. They are equipped with strong legs positioned far back on their bodies, which, while making them somewhat clumsy on land, provides powerful propulsion underwater. This adaptation allows them to dive deep to feed on aquatic plants, invertebrates, and sometimes fish, making them adept at foraging in different underwater environments.

Physically, Aythya ducks are medium-sized with compact bodies, rounded heads, and stout necks. They often display sexual dimorphism, meaning males and females look distinctly different. Males typically exhibit brighter and more varied coloration than females, featuring vibrant head colors and contrasting body patterns that are especially noticeable during the breeding season. This vivid plumage plays a crucial role in mating displays and territory defense.

Another interesting aspect of Aythya ducks is their migratory behavior. Many species within this genus are migratory, traveling long distances between breeding and wintering grounds. These migrations are vital for their survival, allowing them to exploit seasonal food resources and more favorable climatic conditions. During migration, Aythya ducks can often be seen in large flocks, which provide safety in numbers from predators.