Window Alert Isn't Working

[windowalert]

Vadersdadme is exactly right - Some highly territorial birds vigorously defend their territories and will even repeatedly attack their own reflection in windows. They do this because they perceive their reflection to be an intruder.

WindowAlert has a product specifically designed to address this called CardinalAlert - for Cardinals and Robins that repeatedly attack windows

[Vadersdadme]

The decals are designed to stop accidental hits. This is a territorial bird attacking it's reflection in the window. The best method for this would be a mesh covering that blocks just enough of the reflection to prevent the bird from seeing the "intruder".

[mindnova]

This isn't accidental, I have a female cardinal that attacks my window every year.

She even sets in the door handle and pecks at the glass. this is aggression and theres not much you can do.