Subspecies in Kansas: C. g. holböllii (Reinhardt).
Colymbus auritus. Horned Grebe. Rare transient. Two authentic specimens: Manhattan, Riley County, September 30, 1878; male (KU 27465), 2½ miles north of Lawrence, Douglas County, November 16, 1945, E. C. Olson and Ralph L. Montell. Several sight records, from eastern, central, and western Kansas.
Subspecies in Kansas: C. a. cornutus Gmelin.
Colymbus caspicus. Eared Grebe. Regular transient throughout state; more common than Horned Grebe.
Subspecies in Kansas: C. c. californicus (Heermann).
Aechmophorus occidentalis (Lawrence). Western Grebe. Rare transient, perhaps more common in west but status poorly known.
No subspecies recognized.
* Podilymbus podiceps. Pied-billed Grebe. Common transient and irregular summer resident, rare winter resident.
Subspecies in Kansas: P. p. podiceps (Linnaeus).