Bat Surveys

A Bat Survey is often required by the local planning authority when a planning application involves the demolition or modification of a building or other artificial structure, or the removal of trees due to development. 

A daytime scoping survey is typically the first stage of any bat survey. If necessary, this will be followed up by dusk/dawn activity surveys to determine if bats are present or absent within any site affected by development. 

When we identify bats within buildings or trees, it is very unlikely to that this will prevent development from going ahead. However, as bats are legally protected species, works affecting them will usually require a Natural England derogation licence. We are able to guide our clients through every stage of the mitigation process and apply for the relevant Natural England licence. 

Our consultants hold Natural England class licences to survey bats, and are members of the Chartered Institute of Ecology and Environmental Management (CIEEM)

Based in Calderdale, we provide bat surveys throughout Yorkshire and the surrounding areas, including Bradford, Burnley, Bury, Halifax, Huddersfield, Leeds, Manchester, Oldham, Rochdale and Wakefield. For a quotation, or for more information regarding bat surveys, please contact us. 

As the first stage to determine if bats are present in a building, we usually recommend a Bat Scoping Survey (this is often carried out in conjunction with a Phase 1 Habitat Survey). The Bat Scoping Survey is undertaken in the daytime, and assesses a building’s potential for roosting bats. Our ecologists conduct a thorough inspection of the building, searching for bats, or signs indicative of bats such as entrance/exit holes, droppings and feeding remains. Bat Scoping Surveys can be undertaken at any time of the year.

For buildings with limited potential for roosting bats, a Bat Scoping Survey is usually sufficient for planning permission. If, however, the scoping survey identified signs of bats or habitat suitable for bats, then a Bat Activity Survey is usually recommended. This includes between one and three site visits, whereby the exterior of the building is surveyed at dusk or dawn using frequency division and time expansion bat detectors. This can enable us to gain an understanding as to whether any bats are present, and if so, the size and species composition of the roost. Due to bat hibernation times, Bat Activity Surveys are carried out between May and September.

Bagshaw Ecology specialise in carrying out Bat Habitat Surveys in trees. A bat survey is often a requirement if a tree is to be removed or pruned, whether for safety reasons or due to a proposed development.

The initial stage of any bat survey is a bat scoping survey, whereby potential tree features suitable for roosting bats are identified from ground level. Using methods prescribed by the Bat Conservation Trust, individual trees are assigned a level of roost suitability, based on their size and the presence of any features indicative of bats, such as cavities, cracks and flaking bark. This can determine if further surveys are required prior to tree removal.

When suitable habitats for bats are present in a tree, our trained and qualified consultants are able to carry out aerial tree inspections, accessing potential habitat features and inspecting them with an endoscope to confirm the presence or absence of bats.

Bat tree inspections are often carried out in conjunction with other ecological surveys, such as Phase 1 Habitat Surveys, or alongside tree surveys, including BS5837 tree surveys and Tree Safety Assessments.