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Burrowing owls, Pawnee National Grassland in Colorado, USA

Burrowing owls, Pawnee National Grassland in Colorado, USA (© Roberta Olenick/Alamy)

Burrowing owls, Pawnee National Grassland in Colorado, USA (© Roberta Olenick/Alamy)

Burrowing owls

There's a lot about burrowing owls that distinguish them from their wise cousins. Instead of sleeping in trees, they make their homes in the ground, often taking over tunnels abandoned by ground squirrels or prairie dogs. They're also one of the smallest owl species, measuring 19 to 28 centimetres in body length and weighing about 170 grams. Unlike other birds, their method of fending off predators is to make rattling and hissing sounds, as if they were rattlesnakes. And these owls are most active during the daytime, not snoozing as other owls do.
© Roberta Olenick/Alamy