Critters love to build nests inside old gas pumps, I’ve seen this kind of thing many times. I think they like the warmth and safety being behind glass provides, but I’m no bird whisperer.
Due to the extremely strong sodium vapor light shining right on the pump (reflecting on the stainless steel “National” band) this exposure had to be very short–50 seconds. Just long enough to throw a naked strobe pop on the pump from 2 sides, a blue pop on the background from camera right, and some yellow backlight on the “Ethyl” glass from behind the pump.