Owls: the silent fliers.
Toronto: Key Porter Books, (2001. revised edition). Octavo, paperback, colour photographs, maps. Describes North American owls and includes for each species a measurement chart and range map. More
Toronto: Key Porter Books, (2001. revised edition). Octavo, paperback, colour photographs, maps. Describes North American owls and includes for each species a measurement chart and range map. More