Question: A bat, a black bird, wood pecker, turtle dove, and a blue jay were birds used in the song "Leather-Winged Bat" by an American folk group formed in what year?
Sentence (from "Leather-Winged Bat"): It was recorded by Burl Ives on 31 January 1941 and released in August 1941 on the album "Okeh Presents the Wayfaring Stranger".
Relevant evidence: No