Tom Smalley was killed by a Pterobuzzard. Tom Smalley was one of Davids Group
During the first night of the phenomenon, when a Pterobuzzard squeezes through a broken display window and pushes its way through the barricade of fertilizer bags, one of the bags lands hard on Tom Smalley's head, knocking him out and causing him to catch his jaw.
The Pterobuzzard proceeds to devour the flesh on Tom's upper neck, killing him in his unconsciousness.
During the first night of the phenomenon, while Tom Smalley is distracted cutting a Scorpion-Fly to death with a fire axe, a Pterobuzzard lands on top of him, its weight pinning him down, and tears a chunk of flesh from the back of Tom's Smalley's neck; killing him.