The microclimate of warm sunshine, moist air and few winter chills was recognised by leading physicians in Victorian times as a beneficial environment for sufferers of respiratory diseases.
:In the New Forest it occurs in earth-mounds, at Seaton under stones, in the Landslip, Isle of Wight, in the side of the cliff, and at Fairlight I found it in the side of the cliff and in earth-mounds in the undercliff - one of the nests being traced by tracking a worker which was carrying home a fly in its jaws.