Red-necked Grebe, Podiceps grisegena. Previously known as the Holboell’s grebe, which is the North American-Siberian subspecies. The breeding range is on land throughout Canada, Alaska, Eastern Russia, and Korea while wintering over sea along the coasts. This is a non-sexually dimorphic species, but both sexes will change plumage for breeding season, earning their name as the Red-necked Grebe. They form monogamous pairs that have an elaborate courtship ritual. Red-necked Grebes typically nest in shallow, reedy waters in colonies, where 20 or so pairs will defend the nesting area together. Their diet consists of crustaceans, mollusks, insect larvae, and fish. Grebes are a diving water bird, so they are special in that their legs are positioned further back on their body, making them very good swimmers, but not very agile on land.