Brazoria County, Texas
Photos by Marty Cornell 1
Copperhead Snake Population Survey
Nannie M. Stringfellow WMA
Texas Parks & Wildlife Department
Member, Texas Master Naturalists
Cradle of Texas Chapter
Member, Friends of Brazoria
Wildlife Refuges 2
Study Dixon-Werler Ealy-Huxford
Area Entire Range About 1/4 acre
Daily search Two hours/
window All night evening
study Several years Four years
Observed March- May-
activity November September
• Length – adult – up to 27”
• Length shortly after birth – average 11”
• Don’t travel more than 0.5 mile
• Think they’re invisible
• Move slowly
• Strike quickly
• Climb palmettos
• Rarely climb trees (fall off)
• Both studies (Dixon-Werler and Ealy-
Huxford) produced comparable results.
• Copperheads are most active at
temperatures 80o and above.
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