Popped into a small but busy hide. Lots of ducks and waders at all sorts of ranges. There were only six windows, each occupied plus a couple of folk stood up behind looking through the gaps between people. So far, so normal. But two of the windows were occupied by photographers who were fast asleep. Using their bean-bags in the open windows as pillows they were spark out. One of the other birders said they had been like that for 20 minutes!