Grey-rumped Treeswift

Subspecies (4)

• Hemiprocne longipennis harterti

  southern Myanmar through the Thai-Malay Peninsula, Sumatra and Borneo

• Hemiprocne longipennis longipennis

  Java and Bali to Lombok and Kangean Islands

• Hemiprocne longipennis perlonga

  islands off western Sumatra (Simeulue to Enggano)

• Hemiprocne longipennis wallacii

  Sulawesi region including Banggai, Sula, and adjacent islands (off eastern Sulawesi)