Good concept
I got stuck on level 24, I just didn't know what to type there. I also had some troubles with that little bird. I tried "European Robin", "Robin" and "redbreast", the game wouldn't accept any answer. Then I tried it with "passerine" because I thought maybe that's what you meant with "kind of bird".
Then I just tried typing in "robin" (with a lowercase 'r' this time) and it worked. You might want to have a second look into what the game accepts as an answer here.
Anyway, I think the concept of the game is pretty good. I remember playing similar games a few years ago and I always enjoyed it. It's a nice change from all those boring quiz shows that they show on TV everywhere nowadays, because here you have to stop and think, and sometimes even think outside the box.
You just have to try to iron out the little flaws the game currently has and you have a very fun and challenging game.
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