Map of historic en:Kākāpō distribution.
  Maximum distribution since 1840
  Fossil evidence
Own work based on:✦ Kakapohist.png by James Dignan✦ NZ Locator Blank.svg by Ozhiker

Miller, Hilary C. (2003). "Minisatellite DNA profiling detects lineages and parentage in the endangered Kakapo (Strigops habroptilus) despite low microsatellite DNA variation". Conservation Genetics 4: 265–274. DOI:https://doi.org/10.1023/A:1024037601708.
Msikma