I was looking through pictures of the Bronx Zoo photo gallery earlier, and after I saw a picture of a Storm Stork Egg, I asked myself, how dop they keep track of the animals that aren't truly on exhibnit, (The free roaming birds and flying foxes)? In any Indoor Jungle exhibit, this is a problem. Throuh lots of greenery, how do they know the population of birds and stuff? Its a problem if dead birds just stay dead and rot away. that doesn't help other animals health!