These beetles are scavengers, breeding and living off in rotten carcases.
[4] In fact they bury the carcasses of small vertebrates such as birds and mice as a food source for their larvae.
In
Nicrophorus interruptus both the male and female parents take care of the brood, quite rare behaviour among insects. The prospective parents begin to dig a hole below the carcass, forming the crypt, where the carcass will remain until the flesh has been completely consumed. Although the larvae are able to feed themselves, both parents also feed them by regurgitated liquid food.
[5]
The adult beetles continue to protect the larvae, which take several days to mature.. The final-stage larvae migrate into the soil and pupate, transforming from small white larvae to fully formed adult beetles.
[5]