Primary Diet 3 Secondary Diet Diver Aquatic invertebrates Small fishes and other vertebrates3. The most widespread grebe in the New World, and the most familiar in most temperate parts of North America. Eared grebes and commercial harvest both utilize brine shrimp cysts creating a potentially adverse relationship. The dark rufous neck clearly differentiates the Horned Grebe from his cousin, the ~ (Podiceps nigricollis), who has a black neck, and in fact is known as the Black-necked Grebe in Europe, as you might guess from the Latin name. S. A. Cullen, Joseph R. Jehl Jr., and Gary L. Nuechterlein Version: 1.0 — Published March 4, 2020

The Eurasian subspecies is distributed over most of northern Europe and the Palearctic, breeding from Greenland to western China. We collected individual birds to measure diets and examine changes in body condition of staging eared grebes. Far less sociable than most grebes, almost never in flocks, sometimes found singly on small marshy ponds. Eared Grebe Podiceps nigricollis Spp-14-3 Overview The Eared Grebe is distinctive in at least two ways from Nevada’s other Conservation Priority grebes (the Clark’s and Western). When disturbed or suspicious, it may sink slowly until only head is above water. Juveniles are gray-buff, with the lower half of the face white. The horned grebe or Slavonian grebe (Podiceps auritus) is a relatively small waterbird in the family Podicipedidae.There are two known subspecies: P. a. auritus, which breeds in the Palearctic, and P. a. cornutus, which breeds in North America. As a result, the Eared Grebe is the latest of the North American migrants to move to its winter stations. In breeding plumage, Horned Grebes have rufous necks and bellies, gray backs, and black heads with a solid yellow patch from each eye to the back of the head. In the fall most Eared Grebes migrate southwestward to the Pacific, but the species also winters on open water in the Southwest and as far east as Texas and a few turn up each year on the East Coast. We assessed the diet of eared grebes to determine the extent to which they are dependent on brine shrimp and their cysts. Eared Grebe Podiceps nigricollis Spp-14-2 . Because a similar atrophy/hypertrophy cycle is repeated 3–6 times each year, the Eared Grebe has the longest flightless period of any volant bird in the world, perhaps totaling 9–10 months over the course of a …

The Horned Grebe is a small grebe with a straight bill, thick neck, and squarish head. Rarely seen in flight. the ~ and horned grebe.