What is "rock-a-doodle"

Rock-a-Doodle is a 1991 Irish-American-British live action/animated musical fantasy comedy film loosely based on Edmond Rostand's comedy Chantecler. This film was directed by Don Bluth, produced by Sullivan Bluth Studios and Goldcrest Films for The Samuel Goldwyn Company, and originally released in the United Kingdom on 2 August 1991, and in the United States on 3 April 1992. The film features the voices of Glen Campbell, Christopher Plummer, Phil Harris (in his final role before his retirement and death), Charles Nelson Reilly, Sorrell Booke, Sandy Duncan, Eddie Deezen, Ellen Greene and Toby Scott Ganger in his film debut.

Rock-a-Doodle is the forty-ninth album by American singer/ guitarist Glen Campbell, released in 1992 (see 1992 in music). It was taken from the soundtrack to the 1992 animated film Rock-a-Doodle, in which Campbell voiced the main character.