This picture of a Natterer's bat was taken in SWT reserve Harridge Woods, Keeper's Cottage, whilst I was doing hibernation survey for BCT, (writes Adel Avery, Reserve Warden, Harridge Woods.) There were 10 of them in the cellar, and I will visit again next month to check numbers/species present for monitoring. These bats prefer cooler roosting sites, and are often found near to entrance to caves/cellars, usually not appearing in hibernation roosts until December, numbers peaking in January and February. In their efforts to lodge in small crevices they can be found in almost any position, including lying on their back or sides, or even resting on their heads. For the last two winters we have seen a rare Barbastelle bat, also appear when weather gets extremely cold.
For more on bats and Harridge Woods look here.