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White-naped Swift - BirdForum Opus

Streptoprocne semicollaris


With 22cm a large Swift.

  • Black-brown plumage
  • Diagnostic white nape patch
  • Long, broad wings
  • Heavy body
  • Square tail, looking rounded when spread

Similar Species

White-collared Swift and Biscutate Swift.


Endemic to W Mexico, recorded in Belize.
Locally common and not globally threatened.


This is a monotypic species[1].

Has been placed as only species in genus Semicollum or together with Great Dusky Swift in genus Aerornis.


Found in the mountains of West Mexico around gorges, cliffs, high crags, up to 3600m. Usually over pine-oak forest, tropical deciduous forest and scrub. Sometimes seen over coastal slopes.


Resident with only little movement.


Feeds on insects, taken in flight.


Breeds in May in small colonies in caves. Builds a nest with plant material and mud, sometimes no nest at all. Lays two eggs.


  1. Clements, JF. 2009. The Clements Checklist of Birds of the World. 6th ed., with updates to December 2009. Ithaca: Cornell Univ. Press. ISBN 978-0801445019.

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