My knowledge of cartoon physics tells me that birds are essentially immune to any damage. If you punch them in the beak it will just spin around until they, using their opposable thumbs, adjust it back into place. If you punch them in the neck you’ll just leave a temporary fist shaped aberration in their spinal cord which will quickly snap back into place. Aiming for their feet or body is futile since they’ll just instantly dodge your attack by flexing their mass dramatically out of the way and instantly counter with significant emotional damage.

It is a fight you can’t win good Sir or Madame.