Los Angeles Times

Rattlesnakes on California's Santa Catalina Island have learned that it pays to be unusually aggressive

An adult male red diamond rattlesnake is photographed at San Timoteo Canyon in Riverside County on March 18, 2024.

LOS ANGELES -- Discerning what makes rattlesnakes tick is a life’s work for researchers like William Hayes. So if he wants to introduce you to the biological complexity that makes them worthy of study, be prepared to follow a deliberately cautious route climbing over boulders and stepping over logs.

Take San Timoteo Canyon, a river valley near the San Bernardino County city of Redlands offering all the creature comforts rattlesnakes need to multiply and prosper: rock outcrops on which to bask in the sun, thickets of vegetation

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