The discussion at lunch centered around these guys...There are nests like this all over the Stupa (this one sits under the earth hugging layer, which is why there's bare concrete around them). They are tending some white blobs which I think are their babies. I took some time to ask them to leave, but I don't think they felt obliged to comply...I don't know if you can see it, but all five tiny faces were staring straight at me at this point, and my associates suggested I might be annoying them. I don't sting, but they do, so I backed off...