Chapter V: Sub-Family Nycteininæ. the Day Owls

Head moderate, without ear-tufts; wings rather long, wide; tail rather long, ample; tarsi strong, and with the toes densely covered with hair-like feathers; claws strong, sharp; plumage very thick and compact. This sub-family includes only the two species now about to be described, both of which are common to the Arctic regions of America, Europe, and Asia, migrating southward in the winter. They are the least nocturnal of all the birds of this family.