I mentioned that they can eat larger items. The snakes we keep are not in the wild. In the wild they eat what they can get. In some cases a larger-than-ideal food item is all there is.
Also, snakes have more thermoregulation options in the wild than they do in captivity. If it's 85 degrees outside, a snake can bask on a rock in the sun where the surface temperature is over 100 degrees. Or it can go in a burrow near a creek where the temperature is in the 50's. That's a 50 degree temperature gradient. Temperature is key to proper digestion in snakes.
"The Corn Snake Manual" states "Corn snakes are best offered rodents that are approximately 1-1.5 times the diameter of the thickest part of their body."
I've had snakes regurge after eating items that were big enough for them to swallow, yet too large to properly digest.
Tim

Third Eye