Fallow are by far the most common species seen on the Forest. It is difficult to give any accurate estimate of the population size because the animals range freely across the countryside and even into the towns and villages. Numbers had increased dramatically over the last three decades for a number of reasons: mild winters not only allow more deer to survive but also leave them in better condition for fawning in the spring; culling has declined perhaps due to changes in land ownership or because of low venison prices; the decline in agriculture means that more land-owners are prepared to see large herds of deer grazing where previously they would have been competing with sheep or cattle. Fallow are the deer species most frequently hit by vehicles on local roads although it appears that the re-instatement of a carefully planned culling policy on private land is beginning to reduce accidents. There is evidence that the fallow have a significant impact on woodland structure and ground flora in some areas.