Aerial Tree Inspections
Aerial tree inspections for bats
Aerial tree inspections give a close look at trees with features bats could roost in, to find out whether bats or signs of bats are present. They are carried out by our ecologists across most of the UK from our base in Manchester.
How it works
After a ground-level assessment, our ecologists inspect cavities, splits, loose bark and other features at height, using climbing techniques, rope access or elevated platforms. Endoscopes and high-powered torches let us look inside features and gather hard evidence.
This gives a much more accurate picture of whether a tree could hold a roost than a ground-level assessment alone. In many cases it reduces or avoids the need for night-time emergence surveys.
When you might need one
Aerial tree inspections are particularly useful where trees with Potential Roost Features (PRFs) have been found and the works, such as tree removal or construction, could disturb bats or their roosts. The results help meet planning requirements, guide mitigation and show whether further surveys or a licence are needed.
Frequently asked questions
When is the best time for a tree inspection?
Inspections can be done at different times of year, but winter is often best for spotting features, when there are no leaves on the trees. We’ll advise on timing for your site.
How does this fit with other bat surveys?
It usually follows a ground-level Preliminary Roost Assessment. See our bat surveys page for how the whole process works.
Get a quote
Send us the site address and details of the trees affected, and we’ll come back to you with a quote.
Fish Surveys and Fish Rescue
Safely capture and relocate fish before work to protect aquatic life and habitats.
Protected Species Surveys
Find out whether protected wildlife uses your site before works start.
Biodiversity Net Gain
Quantify habitat losses and gains to secure an uplift in biodiversity.
Invasive Species Surveys
Map and ID non‑native plants to guide land management & protect biodiversity.
River Condition Assessments
Assess river habitat to understand condition and guide restoration.
Preliminary Ecological Appraisal
PEAs rapidly assess a site’s habitats and species to flag ecological issues early.