Ducks looking for work?

Today on the way back from lunch, I had to do a double take as I walked by the building 4 lobby because there were ducks standing at the door, waiting to get in. “There are ducks at the door,” I said to the receptionist, thinking she must have noticed me walking backwards, and would want to know about the ducks. “Yeah, I know,” she said in a somewhat bored tone, without even looking up from what she was doing. And that was it, end of conversation. Maybe this was a duck's idea of an April Fool's joke? Nah, I don't think so, because I've seen these ducks around before; I think they really do want a job. (Same with this guy who hangs out by the fountain and tries to scare me every time I walk to the Building 9 cafe, or maybe that *is* his job!)