Definitely 2007, Realm of the Red Ape had just opened and the Maned Wolves are still present before their enclosure was demolished and replaced by Butterfly Journey. The Indian Rhinos also aren't present yet.
I think this may be the oldest version of this map I remember (I would have been 9 at the time). This brings back many memories- red-crowned cranes on the site of what would become waterfowl rearing and is now part of the new snow leopard building site, the little parrot kiosk near islands in danger, now part of the gardens, and most of all that Mauritius kestrel aviary. One thing I don't think I recall is the otters up near the owl aviaries and at that time bongo enclosure- is that just part of the oakfield lawns now?