Wild Republic's series of birds with sound includes these Owls. These include the Snowy Owl, Great Horned Owl, and Barn Owl. At one time there was a Northern Spotted Owl, but that was retired. Wild Republic's Audubon Birds are 5 to 6 inches long and sing their own particular song when squeezed. They are made by Wild Republic in partnership with the Audubon Bird Society. The bird sound recordings are made by the Cornell Lab or Ornithology.