A male cardinal visited my car today, while I was in it...
I thought he was just showing territory aggression, but after observing him for a while, I wonder if he was just in love with my car.
Very little crest-raising, very little battling the mirror image...
He spent a lot of time at the corner of the windshield, and made motions like he was drinking.
Looking for liquid water?
Interestingly, he occasionally tapped on the glass, then preened that bald spot on his chest.
He did this multiple times.