The crag-martin (Cotyle rupestris) haunts lofty cliffs in the alpine region.
Another of the favourite haunts of the people was the garden of Gray's Inn, where the choicest society was to be met.
In its old haunts in the south it is practically extinct; but ten were reported from a reserve in Zululand in 1902.
He continued the practice, which he had commenced in 1848, of taking with him a small party of undergraduates in vacation time, and working with them in one of his favourite haunts, at Askrigg in Wensleydale, or Tummel Bridge, or later at WestMalvern.
In their native haunts they are extremely timid and wary, and very difficult to approach, being rarely seen out of their burrows in the daytime.