This is a great little game with a single control. I did have an issue at first with understanding that I had no button control of the facing but once I came to terms with that, I found I was able to manipulate the bird semi-accurately.
If I had to change anything about what you have here, I would say that the landing/time to recharge might take a second or so too long. It makes sense that the bird might need a rest but as a player I want to get right back into the action as soon as possible.
I applaud you for the quality of the assets and your mechanical consistency of the birds movement. Also, I made it to the top in 279 time segments (I'm assuming seconds?) on what I am pretty sure was the easy mode. Loads of fun and could be a pretty interesting project to expand out. Cheers!