Rockin' Robin by Bobby Day 1957

"Rockin' Robin" (originally released as "Rock-In Robin" on the Class Records 45 single) is a song written by Leon René under the pseudonym Jimmie Thomas, and recorded by American singer Bobby Day in 1958. It was Day's biggest hit single, becoming a number two hit on the Billboard Hot 100, and spent one week at the top of the R&B sales chart

"Rockin' Robin" is in the public domain, as the owners never renewed the copyright