The game is really nice. I like the art a lot and animations are cute. The thing you could have done is maybe also change color palette on clouds and birds as well, so it doesn't look to repetitive. Also I wish there were some powerups to use for killing those damn birds :) . I hope you will continue to iterate on some more ideas and make it even better. Overall, I had a lot of fun playing this and I think you made a good game!
Keep up the good work!