What do I need to know about a Preliminary Roost Inspection (PRI)?
A PRI is usually undertaken as part of the Initial Ecological Assessment when there are buildings (or mature trees) on site that may be impacted by the proposed development works.
A PRI is an initial inspection of the building / tree to assess the suitability for it to contain bats, which are a European and locally protected species. Lots more information on bat surveys can be found on the PDF download button below.
What does a Prelimenary Roost Inspection involve?
- A 'desk-top' study of the area to investigate what bat roosts are known to the immediate area;
- A full inspection of the outside and inside (roof voids) of the building to look for direct evidence of bats
- DNA sampling of bat droppings, if found
- Tree surveys for bats
- An assessment of the suitability of the building to contain bats
- Recommendations for further surveys that the Department of the Environment / Planning will require prior to determination. Further surveys will always be avoided if at all possible
- Mitigation measures to be followed, if this will avoid the requirement for further surveys to be undertaken (e.g. Precautionary Ecological Method Statement, Timing of works etc.)
Further Information about bat surveys
The States of Jersey Department of the Environment require all bat surveys to follow the Bat Conservation Trust Best Practice Guidelines (Collins 2016) when undertaking surveys for bats. These guidelines can be found here or our summarised version of this can be found on the PDF link below.Download