Status
All four species have extensive ranges and large populations, and the increasing use of artificial nest sites has enabled range expansion. The Rock Martin often breeds in lowland and desert towns, the Eurasian Crag Martin's range is expanding in Austria, Switzerland, the former Yugoslavia, Romania, and Bulgaria, and the Dusky Crag Martin is spreading northeastwards into Guangxi, south into lowland Laos, and westwards to the hills and plains of Sindh. There is also a recent unconfirmed report from Cambodia. Their large ranges and presumed high numbers mean that none of the crag martins are considered to be threatened, and all are classed as Least Concern on the IUCN Red List.
Read more about this topic: Crag Martin
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