In my current game (Table #268972330) I just scored a card by discarding a card and then moving two animals. Neither of the animals I moved was onto a bird space (but I had a matching animal already on the space). I was awarded a bird card at the end of the turn, and I have ZERO idea why.
Is there an additional way to earn birds that isn't in the rules? Is this a bug? If it is a bug I'll happily submit it!
It was at Move #96 (or just before!)