Quite a bit of fun.
I enjoyed the "heroic" ending a bit more, despite the cleverness of how the second ending played out and the scale of everything, mostly because the chickens were too cute to eat IMO - but even having multiple paths at all was a fun treat (pun not intended).
I think the boss battles are a bit samey, though in this short of a format it would be difficult to get too complex with different mechanics. And besides, they're well done even if variations on the same patterns and strategies.
Visually, it's marvelous. The sound and music are great. Controls feel mostly good, with an occasional hiccup when spacebar just doesn't register for some reason (could be me).
The character and world design is cute and it would be a fun theme for a larger and more puzzle-oriented game.
Great work!