Which Other Ecological Surveys Will You Need?

Bat surveys are only one part of ecological work that may be required before a project can begin. Many sites support a range of wildlife, and different species have different legal protections and seasonal needs. This means that additional ecological surveys may be necessary to ensure projects go ahead responsibly and in line with environmental requirements.

This guide introduces the most common ecological surveys in Scotland and explains when clients may need them.

Why projects sometimes need more than one survey

Every site is different. Gardens, farmland, buildings, woodland edges, and watercourses all support wildlife in unique ways. Early ecological assessments highlight which species are likely to be present, which helps determine whether specialist surveys are required.

Survey timing is also important. Many species can only be surveyed at certain times of year, which means good planning helps avoid delays.

Common ecological surveys in Scotland

Here are the surveys most frequently required alongside bat work:

Bird surveys

Breeding birds, especially those using buildings or hedgerows, may need specific surveys. Some species such as swallows, swifts, and house martins rely on structures, while birds of prey need greater separation from work areas. Spring and early summer are the busiest periods for bird survey work.

Badger surveys

Badgers use networks of setts across the landscape. Surveys help identify where setts are located and how they are used. Badger activity can occur year round, but some work is seasonally restricted to avoid impacts on cubs.

Otter surveys

Otters use rivers, burns, canals, and lochs. Surveys look for resting places and signs of activity along watercourses. These surveys can be completed in most seasons, although high water levels may affect what can be observed.

Bat and bird building checks

In addition to full bat surveys, some projects require general building checks for birds that use cavities or roof spaces. These are usually completed early in a project to identify any sensitive periods.

Great crested newt surveys (where relevant)

Great crested newts are uncommon in Scotland but are present in some areas. Surveys involve checking ponds and surrounding habitats during spring. These surveys are strictly seasonal and must be planned in advance.

Reptile surveys

Common lizards and slow worms are found in a range of habitats. Reptile surveys are typically carried out in spring and early autumn using safe, non-intrusive methods.

Habitat and botanical surveys

Some sites require more detailed assessments of habitats, plants, or ground conditions. These surveys help identify whether specialist species may be present. They are usually completed between late spring and early autumn.

When to ask for advice

If you are unsure which surveys you need, an ecologist can guide you through the process. Early conversations are the most effective way to avoid seasonal delays and ensure all relevant surveys fit within your project schedule.

The earlier you ask, the more options you have.

Supporting wildlife and planning responsibly

Ecological surveys help protect Scotland’s wildlife while allowing projects to proceed with confidence. Understanding what might be required at the start of a project makes planning smoother and reduces the risk of unexpected setbacks.

References

Bat Conservation Trust 2023. Bat Surveys for Professional Ecologists. Bat Conservation Trust, London.
NatureScot 2020. Protected Species Guidance. NatureScot, Inverness.
Scottish Government 2019. Wildlife Crime and Protected Species. Scottish Government, Edinburgh.