Barn Owl, United Kingdom
Photograph by Mark Bridger, My Shot
A wild barn owl flying over Norfolk reeds at dusk
Ural Owls, Estonia
Photograph by Sven Začek
She looks sweet grooming her chick, but don’t mess with mom’s nest: Ural owls are aggressively territorial. “I’ve made an ‘agreement’ with the females that the price to band and measure one nestling is six hard punches on the head,” says Finnish ornithologist Pertti Saurola.