| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Least Grebe | X | |||||||||||
| Pied-billed Grebe | X | X | X | X | X | X | X | X | X | X | X | X |
| Horned Grebe | X | X | X | X | X | X | X | X | X | |||
| Red-necked Grebe | X | X | X | X | ||||||||
| Eared Grebe | X | X | X | X | X | X | X | X | X | X | X | X |
| Western Grebe | X | X | X | X | X | X | X | X | X | X | X | |
| Clark's Grebe | X | X | X | X | X | X | X | X | X | X | ||