Thank you very much! The bird can be killed by kicking it's projectile back at it. I'm really glad you liked my art. it means a lot. I might update the game after the jam as I wanted a to add a boss, but ran out of time. I'm super happy you enjoyed it! Thanks for playing.
P.S. Screenshake is incredibly effective and relatively easy to implement. It can drastically improve the feedback a player receives while playing. Just don't overdo it as it can be jarring.