Didn't find too much myself.
Original title was "Chickens Never Walk Backwards".
This guy apparently did the music:
And according to the British Board of Film Classification, the running time was 23m 22s. It was classified on July 1, 1982 and submitted (for classification) by 20th Century Fox Film Co. Ltd (which was the distributor of CONAN THE BARBARIAN in Europe...).
My best guess is this enigmatic short movie was only shown in theaters in the UK...