This song can be traced back to have been created by Leon René, using Jimmie Thomas as his pseudonym.
It was on 1958 when Bobby Day collaborated with this former group “Hollywood Flames" together with the infamous saxophone player, Plas Johnson came out with the unique version of “Rockin’ Robin” that soon became so popular in the music industry. In fact, legendary Michael Jackson (from Jackson 5) published his rendition which became his jewel in the crown on his road to his successful solo career afterwards.
One interesting fact about "Rockin Robin" is that despite of being an original recording, it remains to be a public domain until now, free of public use with no copyrights renewed nor royalties to be paid.
Find out more about this popular song at: https://galaxymusicnotes.com/pages/how-this-public-domain-song-rockin-robin-got-so-popular