Listen to Bird Song for a Nap Time (Baby Sleep) online. Bird Song for a Nap Time (Baby Sleep) is an Unknown language song and is sung by Nature Collection. Bird Song for a Nap Time (Baby Sleep), from the album The Best Nature Sounds Collection – Ocean Sounds, Birds for Sleep and Relaxation, Sonidos de la Naturaleza, Sons de la Nature, Water Sounds, Guitar & Piano Music, was released in the year 2015. The duration of the song is 5:20. Download Unknown songs online from JioSaavn.