By: Carl H Ernst and Evelyn M Ernst
668 pages, 200 col & 137 b/w illus
More than a field guide, this monumental reference describes every known aspect of each of the 131 species found in the United States and Canada. Begins with an introduction to snake biology and evolution followed by an identification guide and key. Species accounts are accompanied by colour photographs and provide detailed information on identifying features, geographic variation, known fossils, current distribution, habitat type, behaviour, reproduction, growth, diet, and predators.
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