Cat Attacks Kitten Greeting Card

This cat must think that the cats on the greeting card have come to take her spot! AND KITTY IS NOT COOL with it. I am a reluctant cat owner myself and I have to admit that I've seen my cat do a lot of crazy stuff. Quite often she'll see the shadows of the birds outside dance across the closed blinds and she'll take a full speed, running jump INTO the closed window. She's an indoor cat, so I don't know what she thinks she'll do if she catches one of those birds and has to land on the ground OUTSIDE!?!