When is Best?

Survey calendars should be used only as a reference guide because seasonal windows may vary depending on geographical location within the UK (for instance winter hibernation will tend to end earlier in southern regions than those further north). There is also variation from one year to next as a result of different weather patterns prevailing through the seasons.

Advice should therefore be sought from a qualified ecologist for guidance on appropriate seasonal windows matched to site and project specific conditions.

 

Use the Survey Calendar to identify the best time to carry out surveys for commonly encountered species and habitats.

 

Use the Mitigation Calendar to identify the best time to carry out work designed for mitigation, compensation or enhancement purposes.