This was a response to a query as to whether a bat survey had been undertaken before bird netting was installed in the trilithons in 2021.
It doesn't find any bats at the Stone Circle, because they didn't look there!
The nearest they looked was at Durrington Down and Fargo Wood, where there were lots of bats.
They monitored the A303 including the drove crossing point by the Stone Circle - "Crossing point 2018_3"
"A total of 18 bats were recorded at crossing point 2018_3 throughout the six survey visits. Species recorded included common pipistrelle, soprano pipistrelle, serotine, noctule and an unidentified bat."