Podicipediformes is an order of aquatic birds commonly known as grebes. These birds are characterized by their slender bodies, long necks, and excellent diving abilities. They are found in freshwater lakes and ponds around the world, where they primarily feed on fish and invertebrates. Grebes are known for their unique courtship displays, which often involve elaborate dances and synchronized movements on the water. They have specialized feet positioned far back on their bodies, allowing for powerful swimming but making them awkward on land. Their nesting habits include building floating nests made of aquatic vegetation.