sky island
n.β Β«Itβs a difficult bird to study because itβs distributed across a fragmented range of mountaintops which we sometimes refer to as “sky islands.”Β» ββResearchers work to ensure survival of a rare songbird” by Mary Esch in Lake Placid Newsday (Long Island, New York) Aug. 26, 2006. (source: Double-Tongued Dictionary)