Deer collisions on the rise as number of animals on increase By Caroline McMorran | Updated: 09:23, 23 December 2020 Get the Courier and Groat sent to your inbox every week and swipe through an exact replica of the day's newspaper A deer caught in headlights - deer often move to lower ground for grazing in winter. Almost 1800 road accidents involving deer were officially recorded in 2018 although tens of thousands more go unreported, according to a government advisory group. Winter is a particularly dangerous time, when deer often move to lower ground for grazing and drivers face wet and icy driving conditions in poor light.