I love the atmosphere, art style and story of this cute little game. That said, the controls are a bit wonky. When I possess a bird with the Q button and activate it's special ability, I am unable to move onto a sewer grate/sidewalk. I need to press Q to turn it off and then turn it back on. Now this isn't gamebreaking but, it was a bit of a nusiance.
The other issue I ran into was with possessing/stacking objects. I'm assuming most of the objects have a tether because they seem to disappear if moved too far away from the spawn location. I was unable to access the flower shop rooftop as a bird but I was able to stack up objects to get up there as Boolia.
However, as Boolia, the officer still referred to me as a bird so I don't know if this is a bug or not. In regards to bringing him the bread, I guess the birds were unable to carry it up there even though he asked the "bird" for it. I tried stacking trashcans and placing the bread on top so maybe I could posssess it and pull it up after flying over but, they possession didn't last and everything fell. Not sure if this is intentional or a bug.
Either way, the game is very enjoyable and I hope the rest of the kinks can be worked out. It definitely deserves more exposure!