The tawny owl is Britain's most common owl, but woodland loss and fragmentation are reducing territories and hunting opportunities, affecting individual welfare and population stability.
Tawny owl welfare reflects the quality of their woodland territory. An owl holding high-quality deciduous woodland with abundant small mammal prey hunts efficiently and maintains good body condition. An owl in fragmented or degraded woodland - insufficient prey, inadequate cavity nesting sites, edge effects from surrounding agriculture - operates at chronic energy deficit, particularly during the energetically demanding chick-rearing period. First-year owls that cannot establish territories face starvation as established pairs defend their ground year-round. Habitat connectivity between woodland patches is critical for allowing young owls to locate viable territories. Nest box provision directly improves welfare by providing secure nest sites in woods where natural cavities have been removed by tree management.