I have huge windows in my sitting room. They are about 6ft high and 12ft wide, divided into four sections. They rise from the floor and I have amazing views I don't want to block out. The sitting room is an upstairs mezzanine and the windows on the back side are the same, with French doors beneath (so they are double-height from the ground to the roof), again with stunning views. The trouble is that birds often fly into the windows, especially in the evenings as the sun sets and I ought to put something there that they can see. I don't really want anything that blocks the lovely light or impedes too much on the views, which are also pretty good at night because you can see all the lights of the town beyond the fields. Can anyone suggest anything that doesn't involve stickers on the windows (DDs suggestion) or net curtains (MIL)?