Ecology of the Opossum on a Natural Area in Northeastern Kansas

Set on the 590‑acre University of Kansas Natural History Reservation, this study turns the spotlight on the common opossum, the largest resident predator in a landscape once dominated by buffalo, wolves and elk. With those megafauna gone, smaller carnivores like the opossum now sit near the top of the food pyramid, subtly shaping plant and animal communities through a web of interactions. The authors frame their work as a window into how these shifts are reshaping the region’s ecology over time.

The research spans four field seasons from 1949 to 1952, relying on extensive live‑trapping to capture data on movement, breeding cycles, diet and natural foes. Detailed notes on weight, sex, injuries and parasite loads were recorded for each specimen, while the traps themselves—ranging from modest boxes to larger cages—were baited with everything from carcasses to bacon grease. Though the nocturnal habits of the opossum made each capture a prize, the painstaking effort yields a richer picture of how this adaptable marsupial fits into a changing Kansas ecosystem.