What a visually pleasing entry!! The song made me chuckle as it fits being in a farm. Almost sounds like something i would hear in a children's book narration. The birds kind of freak out by jumping really quickly or just moving around very rapid once i move them to a spot. Doesn't happen all the time but for some reason mostly with the white bird lol.
I am going to be honest, this is VERY hard as I was expecting to use just my keyboard like a traditional PC DDR game. I found myself fumbling a lot in the beginning so in my opinion, game play will be quite hard to pick for anyone not familiar with the genre let alone the controls. However, I think you did mention that you were attracting more of a seasoned DDR player so that might be the target audience you're looking for.
Great entry and I hope you continue to work on it!!