The idea of a pigeon poop being heavy enough to push a button and hurt a person is definitely amusing. Also why can't farting do anything to the rebel pigeons? Come on, it would make it actually useful! The puzzles are fun and I definitely looking forward for more.
However, I do want to point out that the controls can be a little weird. The pigeon sometimes refuses to fly up when I instructed it to. Pete sometimes just lags (I'm not sure how to properly describe it, forgive me).
Overall a very decent game, some bug-fixing and more levels would be a very welcomed addition for me.