It does look like a dog in the moat, but I don't think dogs have ever been allowed into the zoo. The other possibility is some of sort of waterfowl.
The round roof is shelter for shade - the islands would be in full sun without any trees, so the only other shade would have been the indoor quarters and their entrances. Within a couple of years they added a couple of dead trees and a metal climbing structure. Note that there are no hot wires (although they were added eventually).
My point about the hyancthines was tongue in cheek, but they are very difficult to see - naturally I am delighted that they are rearing a chick.
Alan
The round roof is shelter for shade - the islands would be in full sun without any trees, so the only other shade would have been the indoor quarters and their entrances. Within a couple of years they added a couple of dead trees and a metal climbing structure. Note that there are no hot wires (although they were added eventually).
My point about the hyancthines was tongue in cheek, but they are very difficult to see - naturally I am delighted that they are rearing a chick.
Alan