Podiceps

Podiceps is a genus of birds in the grebe family.
It has representatives breeding in Europe, Asia, North, and South America. Most northern hemisphere species migrate in winter to the coast or warmer climates.
They breed in vegetated areas of freshwater lakes, nesting on the water's edge, since their legs are set too far back for easy walking. Usually two eggs are laid, and the striped young may be carried on the adult's back.
All the genus are excellent swimmers and divers, and pursue their fish prey underwater.