Owls can rotate their heads, almost all the way round- but not fully!
Owls’ eyes look forward in a fixed position. In order to see left or right, the owl must turn its entire head.
Great Horned owls have an easily identifiable call that goes “Who…who…who”.
Great Horned owls do not build their own nests, but use nests built by hawks, crows, magpies, herons, or other large birds.