Barn owls are iconic predators of farmland but face threats from rodenticide poisoning, road deaths, and loss of nesting sites.
Rodenticide poisoning causes barn owls to bleed internally, suffer weakness, disorientation, and prolonged death. Even non-lethal doses impair hunting ability and immune function. Road deaths kill many birds hunting over verges. Cold, wet winters reduce prey availability and cause starvation - barn owls have very limited fat reserves. Chick starvation in poor prey years is a significant welfare concern.