This is a Spin off of the popular series Danger mouse which ran from 28 September 1981 - 19 March 1992. Count Duckula first appeared in a Danger Mouse episode called "The Four Tasks of Danger Mouse" and appeared in 3 other episodes.
The front of the airplane looks a lot like the face of Danger mouse, this is a nod to the original series main character.
The characters Gaston and Pierre had there own spin-off called "Victor and Hugo: Bunglers in Crime", except they were human rather than birds.