Pied-billed Grebe (Podilymbus podiceps, Grèbe à bec bigarré, PBGR) from my Better than Bosque workshop. Bosque del Apache National Wildlife Refuge, San Antonio, New Mexico, USA. Image Copyright ©Christopher Dodds. Sony Alpha alpha 1 Mirrorless camera & Sony FE 600mm f/4 G Master OSS Lens with Sony FE 2X Teleconverter @1,200mm ISO 1,250, f/8 @ 1/5,000s Manual exposure. Full frame image
Among the most skillful of all diving birds, grebes not only plunge headfirst underwater; they also can sink slowly out of sight by compressing their feathers and driving out trapped air, thus making themselves less buoyant.
Grebes, in fact, are so well adapted to life in the water that they seldom fly, and many birders have never seen one on the wing.