I just came across this thread again (thanks to someone who likes it). I thought it might be fun to get it going again, seeing there have been lots of new members in the intervening two years. If it doesn't take flight then fine, it can dwindle back into the depths again.
Basic run-down of the game: give a hint or riddle about an animal at Chester Zoo. The person who gets the answer correct gets the next turn. Riddles are the most fun way to play.
I'll get it kicked off with a probably-easy one. Your reasoning as to your guess should be given (because that is interesting).
Riddle: born to dive