Hey Santi!
Lots of great things here! Love the art all around, especially the pigeons. A big highlight for me is the audio which really creates a strong ambiance.
The one thing that feels a bit off for me is pressing space for food. While the game is from the perspective of a pigeon, the player is the one controlling the human throwing the food. I think a way to fix this dissonance would be to add a specifically loud cooing sound right before the food is thrown in order to have it feel like the player is asking and receiving food, as opposed to having direct control over it.
Still really love watching those pigeons! Great job!