A chatty little British book with channing and informative illustrations. The authors itemize the repellent facts of owl intake, including charts which show that an owl's fancy wanders with the locale -- in city areas around London small birds were preferred to rodents. There are discussions of mating which becomes a perilous duet of lethal equipment; of their formidable fledgling care; of stakeouts, preparations and execution of the kill which is directed by sight and sound. The owl is an ancient bird, at least sixty million years, which comes in stunning varieties (maximum height for the Eagle owl is 30""; for the Pygmy 5""). Owls have had much currency in folklore and literature, and one chapter is devoted to man's usually cowed reaction to them. Appendices concern owl eyesight and hearing, their care in captivity, and a generic listing.