| Families | 
| Species: Grebes | 
| Pied-billed Grebe Horned Grebe | Red-necked Grebe Eared Grebe | Western Grebe Clark's Grebe | [Western Grebe X Clark's Grebe] [Aechmophorus grebe] | 
| [Aechmophorus grebe](Aechmophorus sp.) | ||||
| Year | Season | N | S | |
|---|---|---|---|---|
| 2010 | Spring | 1 | One left unidentified in St. Louis where either species would be unusual 5/26–27 KJB, MLH, PHS. | |
| 2013 | Spring | 1 | Presumed hybrid or intermediate Clark's/Western grebe 5/29 St. Louis (Park Point) ph. †KRE. | |
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| Click on the bird name to see a photographic image of the bird. | |
| Column N | Number of counties where the bird was seen in the North. | 
| Column S | Number of counties where the bird was seen in the South. |