PA LAW STATES....
"Persons who hunt, capture, kill, or possess timber rattlesnakes must have an Individual Timber Rattlesnake Hunter and Rattlesnake Possession Permit."
YES, unless he had a license, his actions were illegal.
Timber rattlesnakes are protected under specific regulations by the Pennsylvania Fish & Boat Commission. For more information, consult the most recent "Pennsylvania Summary of Fishing Regulations and Laws" (supplied with fishing licenses) or direct questions to: Nongame and Endangered Species Unit, Pennsylvania Fish & Boat Commission, 450 Robinson Lane, Bellefonte, PA 16823
www.fish.state.pa.us