Starting last weekend, I had a Cardinal outside of my basement window that could see his reflection and was constantly attacking the window/reflection. I bet he was pounding his beak against my window for at least 4 hours during the day... it's really odd behavior but it is common for male birds to do this in the spring time, I know Robins are especially aggressive and I had seen it before with them. So I tried closing the curtains and hanging up some light scattering crystals to see if that would deter him but it did not. So I spent some time researching online and found that if you cut out paper or cardboard shapes of predator birds like falcons or owls and put them in the window that it may scare the birds away from the window. Well I did one better and I think I scared off all of the Cardinal's in the neighborhood LoL... check out this creepy thing I hung in the window
Just keep in mind this trick if you ever get birds attacking your window, much to my cats dismay, it worked instantly
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