Clifford E. Shackelford

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Hummingbirds of Texas

with Their New Mexico and Arizona Ranges

Texas A&M University Press (2015)

Written for a general audience, with spectacular images for birders and nature enthusiasts at every...

Texans on the Brink

Threatened and Endangered Animals

What good is a rattlesnake? What purpose do animals serve? All species play a vital role in their...