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?
Basically what everyone suggested. Reduce the reflectivity of your windows since birds see it as sky or trees. Different window treatments have different efficacy. Gotta shop around for what fits your budget and what is effective for your window.