Very nice little demo! The idea of playing as a pigeon and using various eggs as abilities is really fun and interesting. For such a short playtime, I feel like there was already quite a lot to do and it did a good job showcasing what the full game would look like.
All the characters in the game were adorable and really well drawn, and I like the idea of using mixed media with photos for the background and stylized sprites for the foreground, especially if the level itself is also eventually going to use this illustration-like style. The player felt a bit slow, though I guess that makes sense since we're supposed to be injured and trying to heal. For a future update, some effects and animations for eating, laying eggs, and getting hit by enemies would definitely be a big improvement.
Overall, the demo definitely has me intrigued in this game! Good job!