The value of tree climbing bat surveys!
We have always been surprised by the number of Potential Roost Features (PRFs) for bats identified via ground-based assessments that when climbed and viewed from the correct angle offer very limited space, or no space at all, for roosting bats.
Pictured below is an example from an Elton Ecology survey last week. A PRF downgraded once climbed with no further surveys or time restrictions required, as it can be seen from a viewpoint at height that the decay at the feature has not formed a significant cavity into the tree.
Tree climbing bat surveys are often valuable to avoid unnecessary nocturnal survey work and time delays for development projects.