Ring-necked ducks get the name from the hard-to-see chestnut collar on its black neck. A distinct marking are two white rings on the bill. The females are mostly brown with a white eye-ring. These ducks are generally found in the northern parts of North America in the summer and the southern parts in winter by freshwater sources. They are diving ducks, which means they feed by diving beneath the surface of the water, they eat clams, snails, and insects. They also eat seeds and leaves. I saw these Ring-Necked ducks in a pond in northern Arizona, where they come generally during winter months.