This was a fun mechanic! Took me a minute to figure out exactly how it worked, but once I did I enjoyed playing through the level. At first it was pretty challenging and I had a lot of fun dodging the birds, but as soon as I found out that you can just stay at the top/bottom and switch sides whenever needed, the game became very (actually, too) easy. I was just cruising with barely any birds coming my way. I stopped after hitting the 200 points mark because the game didn't seem to become much harder after that. My advice would be to keep increasing the difficulty (maybe have some smaller, faster birds too later on?) and also to have birds come in flying in a straight line, across the upper/lower parts of the screen. The artstyle was very cute (liked the idea of the pine cone fairies very much!), and the music jazzy, good job! Congrats on making this game and thanks for participating in the jam!