Fallow deer, the UK second most abundant deer species, suffer high road mortality particularly during the October-November rut when males move widely in search of females, and during post-rut dispersal of yearlings in spring.
Deer struck by vehicles suffer severe traumatic injuries. Those that run off injured often die slowly over hours or days from blood loss, broken limbs, or internal trauma. Some injured deer remain on or near roads, suffering while waiting for humane despatch. Drivers also face risk, and the fear response of injured deer makes approach and capture for treatment extremely stressful for the animal.