This cardinal 🐦 did this last year - attacking his reflection in the windows, until he bled. Finally he found a mate and settled down.

Well, he's back and at it again! Only this year, he is attacking multiple windows and driving the indoor cats absolutely nutz! 😂 He already has a mate and they are building a nest, but boy is he aggressive! 😳 Every time he has a go at the bedroom window, Summer smacks him from inside! 🤣 #CatsOfMastodon #Birds