Barn owls are declining across Europe and North America due to habitat loss, rodenticide poisoning, road mortality, and cold wet winters that reduce prey availability during critical periods.
Barn owls facing prey shortages during breeding season watch their chicks die of starvation — a process lasting days. Adult owls that cannot hunt effectively in wet weather deplete their own body reserves while attempting to provision inadequate prey to growing chicks. Rodenticide poisoning causes internal hemorrhaging that kills owls slowly over days. Road kills cause immediate death for some but prolonged suffering for injured survivors who cannot be reached for rescue. The combination of food supply disruption, toxin exposure, and vehicle mortality creates multiple simultaneous welfare threats for a species already under pressure from habitat loss.