Barn owl nest box programs combined with rodenticide-free farm management demonstrate that biological pest control through owl predation can replace chemical rodenticides with welfare and biodiversity benefits.
Barn owl nest box programs address the rodenticide secondary poisoning welfare problem at its source — by providing effective rodent control that does not require chemicals, the exposure pathway for owls is eliminated. Farms hosting resident barn owl pairs experience natural rodent population regulation that prevents the outbreaks that prompt intensive rodenticide use. This is an example of welfare-positive pest management that improves barn owl welfare while maintaining the farm management function previously provided by chemicals that harmed them.