It’s after midnight when the windshield fogs up on Thomas Aycock’s F-250 pickup truck. He flashes a low smile as he slowly maneuvers through the sawgrass, down dirt roads deep in the Florida Everglades.

His windshield just confirmed it: When the dew point drops in the dead of the night, it’s prime time for pythons.

“I catch more pythons when that happens,” Aycock explained. “It’ll make things start moving.”