I think the premise is super entertaining and cute. Controlling each finger to play rock paper scissors is really cool, and I love the fact that you decided to use PIGEONS to make a game like this.
I think one minor thing I'd like to see is just the result of the fifth and final round. Right now, the game just kinda goes directly to a win/lose screen, but I think it would just feel nicer if we actually go to see what the opponent did and THEN go to a win/lose screen right after that. I understand that it's not entirely necessary because we essentially get to see the OUTCOME of that one duel with a win/lose screen, but I just think it would help make things flow a bit better.
Another nit-picky critique would be that the opponent pigeon uses their first two fingers to do scissors. However, for the player, they must use their second and third fingers to do scissors. It confused me a bit in the beginning because I tried using scissors with my thumb and index finger too, only to realize that wasn't the correct way of doing things. I think either changing the art for the opponent or making the index finger + thumb a viable scissors combo would be useful!
I can't really say much else though because this game has so much charm to it! I also love the fact that you need to do a thumbs up to replay--very clever! Loved this game a lot :)