Francisco Piedrahita: Western Grebe (Aechmophorus occidentalis)
Francisco Piedrahita: Eared Grebe, Black-necked Grebe (Podiceps nigricollis)
Francisco Piedrahita: Eared Grebe, Black-necked Grebe (Podiceps nigricollis)
Francisco Piedrahita: Horned Grebe (Podiceps auritus)
Francisco Piedrahita: Red-necked Grebe (Podiceps grisegena)
Francisco Piedrahita: Red-necked Grebe (Podiceps grisegena)