Wrens aren’t our flashiest birds, but they more than make up for it with their big personalities. Small and brown, they rarely sit still, whether vigorously defending their nests and territories, pecking for food on the forest floor, or just incessantly chattering away. They’ll get into shouting matches and physical confrontations with interlopers, including much larger species and humans, and even destroy eggs of other birds. In other words, wrens don’t mess around.

https://www.audubon.org/news/birdist-rule-96-know-which-wrens-live-near-you