Just how smart are jays? A 2002 study published in Animal Behaviour found that these tricky birds have the ability to deceive each other.
The entire corvid family-which includes crows, ravens, and jays-is exceptionally intelligent. These birds have also been known to play pranks on one another and tease other animals.

Cardinals (along with several other bird species) sometimes cover themselves in crushed or living ants, smearing them over their feathers, or allowing living ants
to crawl on them. While scientists still aren’t sure what the purpose of “anting” is,
some believe the birds use the formic acid secreted during their ant bath to help
get rid of lice and other parasites.