Little owls, introduced to Britain in the 19th century, are now declining as farmland habitats are managed more intensively, reducing the rough grassland and orchards they depend on.
Little owls in farmland under intensive management face progressive loss of the rough grassland, earthworm, and invertebrate prey they require. Nest site loss from building modernisation and orchard removal removes essential breeding habitat. Secondary poisoning from rodenticide-contaminated voles and mice affects populations. Little owls are ground foragers vulnerable to agricultural machinery. Traffic mortality on rural roads with overgrown verges that owls hunt along is a significant cause of individual death and injury.