Breve descripción de lo que observaste
Adult, breeding plumage (note black ring on pale bill)
I've never connected this call with the actual bird before.
Brief description of what you observed
The Pied-billed Grebe (Podilymbus podiceps) is a species of the grebe family of water birds. Since the Atitlán Grebe (Podilymbus gigas) has become extinct, it is the sole extant member of the genus Podilymbus. The Pied-billed Grebe is primarily found in ponds throughout the Americas. Other names of this grebe include American dabchick, dabchick, Carolina grebe, devil-diver, dive-dapper, dipper, hell-diver, pied-billed dabchick, thick-billed grebe, and water witch.