What do tinamou calls sound like?

Tinamou vocalizations are among the strongest and most pleasant of any birds in the American tropics. They are characterized by loud, melodious whistles that vary significantly between species.1

These calls range from the long, complex, and songlike sequences produced by the brown tinamou (Crypturellus obsoletus) to the simple, monosyllabic calls of the cinereous tinamou (C. cinereus). Other species may sing a series of notes that ascend or descend in pitch. While the calls of males and females are similar, they are often discernibly different to the human ear. Additionally, these vocalizations are frequently highly ventriloquial, making it difficult to pinpoint the exact location of the bird.1