They are also known as brown owls.
Billybirdy.
Svensson, L.
Where the bird is predominantly brown then the rest of the plumage has a brown hue and where the morph is of a grey colour then the remaining base colour is grey.
In Norway, where prey density is low, territories range about 255 acres.
Tawny owls also displace in urban areas, taking over their nests in buildings.