What is the best way to prevent birds from hitting a window?
Answers:
You can fix something to the outside of your windows to stop birds from flying into them. Birds fly into windows because the reflections confuse them. Some see the reflection of trees and the sky and don't realise it is glass. By fixing something to the window you will reduce the reflection and birds are less likely to be confused.
Plastic stickers work well!
Other answers:
Don't put your bird feeder there.
Don't put your bird feeder there.
Don't use Windex. lol
Just leave your window open...
Now seriously... try to hang something noticeable outside your window
put a picture of a bird of prey like an owl in your window for a few weeks also im not sure where they sell this but you can check there is a spray that contains urine from vulters , owls and other birds of the like that repels birds sorta like hunters use to attract there prey
open the window.
I have plastic decals on mine that can be easily removed. Birds have never hit my windows even though I don't have curtains but have lots of indoor trees.