This is a cute little animated film that is set to a traditional "nonsense song"--one that is a popular folk tune whose words make little sense. Using cut out shapes, the animators are able to make the shapes come to life and dance to the music about a bird that keeps losing pieces--only to have them come back in even greater numbers. This is reasonably interesting but I really think it would be appreciated even more by an audience that actually speaks and understands French. I had trouble following it since my French is only passable at best.
Overall, it's an experimental film that many will find not particularly exciting. I've seen several of Norman McLaren's films (some of which are quite similar) and I am definitely not a fan--mostly because it just isn't to my taste. However, lovers of experimental animation will no doubt enjoy it more as would French speaking people who can follow the song.