Nice quiz and especially cool that everything was a bird! I had a really hard time but loads of fun.

Unfortunately it seems as though "bird" was accepted as an answer for everything. So although I wrote songbirds I got points for smallest birds. And even though I said "fastest birds" I got points for the largest ones.

Ican deduct these points mentally, but maybe it's possible to remove bird from the accepted words and focus on what makes them special.

Smallest birds in what category? Surely not the world as that is the bee hummingbird. Similarly for largest? This was too bird orientated, especially for someone who doesn't know birds, better to have a mix of topics IMHO.