|Scrub jays, among other birds, like to rub themselves with ants. 442683/PUBLIC DOMAIN|
Birds Rub Ants---Huh?
Another great science story, or, as I've written previously, more science stuff:
It turns out that some birds love to rub themselves with ant bodies; and some birds even roll around on top of ants' nests.
From Atlas Obscura, a web site I think everyone should be checking out every day, this article says that although people have been aware of this behavior for some time, and some researchers have studied it, no one really knows why (and maybe there are a few reasons, and/or different reasons for different birds, and so on).