Grebes are pretty adorable, but this species may take the cake for cuteness. The Titicaca flightless grebe or short-winged grebe is found in Peru and Bolivia, living primarily on (you guessed it) Lake Titicaca, but also in several surrounding lakes. Though it can't fly, it can swim like a champ and catches mainly small pupfish as prey.
Hooded Grebe - Patagonia, Argentina. This species of grebe was only discovered in 1974, but is believed to be Critically Endangered, threatened by gulls, overgrazing by sheep surrounding the lake, and a slow reproduction rate. There are several thousand of these birds living in remote areas of Patagonia.
Lakes on the east side of the Cascades are the best place to see dancing and breeding Western Grebes. In the winter, they gather in large numbers in coastal areas. They are often easy to spot because they prefer open, deep water for diving. Their contrasting black-and-white plumage also draws the eye. #MustSeeBirds
Hooded Merganser. Merganser birds are fish-feeding ducks have serrated edges to their bills to help them grip their prey; they are therefore often known as "sawbills". In addition to fish, they take a wide range of other aquatic prey, such as molluscs, crustaceans, worms, insect larvae, and amphibians; more rarely, small mammals and birds. When not diving for food, they are usually seen swimming on the water surface, or resting on rocks in midstream.