Thanks for submitting your game design doc! as always, its much appreciated - doesn't have to be a finished game to be part of the jam!
The concept sounded good - the mechanical implementation of what you described (mostly the birds and in their interaction) sounded challenging to get to a good state within a game jam. But I think this would be fun to try! I did wonder if it was being played two player (lets say, online) - would it be an issue that the jump is shared? Could it work that each had their own jump, and it treated like a good job if both jump at the same time perhaps?
Loved the detail in the intro, it sounds like you put a lot of thought into it - probably more than I've seen elsewhere in the jam!