Zim Herbert S. Owls

Revised Edition. — New York: William Morrow and Company, Inc., 1977. — 72 p. — ISBN: 0-688-32109-7.Owls make up an especially interesting group of birds perhaps because of the surprising differences among them. In size, for example, the great gray owl of the North may grow over five times as tall as the tiny elf owl of the Southwest. Here Dr. Zim describes the various kinds of owls and tells what scientists have learned about them.
After giving the classification of owls, he explains their physical characteristics: the peculiar qualities of their big eyes, their remarkable hearing, powerful talons, and the silent flight that makes them such deadly hunters. He then reports on behavior: what they eat, their territorial habits, and how they mate and raise their young.
This revised edition of the book first published in 1950 has been completely rewritten by Dr. Zim. He has added recent ecological data and information gathered with infrared photography, and he has expanded the coverage to include owls found in other parts of the world. A special feature is a new identification section, which lists 1 2 of the most important species.