First of all I would die for this crow! The sounds where just too damn cute I love it! Since it is played so often you might vary the pitch ever so slightly each time it is played so it does not feel that repetetive.
The time constraint was a little bit much in my opinion. Especially the tile room took way to long. I feel like it might have been half it's size for it to be easy to remember after 2-3 gos and not eating up so much time.
I really really like the artwork and I'm a sucker for knowledge games! Oh and the music! When it ramps up as you near your end... it is very very good!