I'm a very light sleeper, so I have blackout stickers on my bedroom window. (They're vinyl sheets that stick to the inside of the window with water.) I've used these most of my life with no issue. Well, I moved from the city and my new place is in a wooded area. I'm hearing birds and squirrels bonk into the window because they think it's a little cave or something. With the heatwave it's now multiple times a DAY. I opened my window today and there's actually a small pile of dead bodies on the ground. I feel awful.
Is there anything I could do to help these animals understand my window is a black wall and not a cave?
You could switch from the Vinyl to a combination of blackout blinds and black out curtains. At least these can be opened in the day time which is when you'll get the majority of your problem presumably? Blackout blinds are also not usually black on the outer surface; they're better white to help reflect light so wouldn't look like a cave?