During the spring of 2011, the Vermont Department of Fish and Wildlife in collaboration with the Orianne Society and The Nature Conservancy began a two-year study of the summer range of the timber rattlesnake in western Rutland County.

To that end, transmitters were implanted in the body cavity of twenty-two adult snakes. From late spring through early autumn, the snakes were radio tracked across rough terrain west of Otter Creek. Now that that phase of the project has ended, and Dr. MacLachlan, who had inserted the transmitters, is removing them, as well as taking skin and blood samples from each rattlesnake to check for pathogens.

The day I observed the procedure, the operating room was well lit , with a sink in one corner flanked on both sides by a pink linoleum countertop. The floor was a soft white and textured like the back of a snake. There were cupboards, tanks, computers, glass-fronted cabinets filled with a diversity of surgical instruments, and an aluminum operating table situated beneath a hose descending from the ceiling. The hose, called a gas scavenger, delivers both anesthesia to put the snake to sleep and oxygen to bring it back. There’s a heating pad covered by a blue terry-cloth towel on the operating table to keep the snakes warm.