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Tumbes Swallow - BirdForum Opus

Photo © by Mark Harper
Bosque de Pomac, Peru, 3 August 2023
Tachycineta stolzmanni


Mostly dark upperside with pale grey rump, and pale grey underside. The pale grey areas show dusky shaft stripes. The upper half of the head, mantle, and wing coverts have a green sheen. Tail is forked.

Similar species

Very similar to Mangrove Swallow but smaller, with greyer-duskier underside, and lacks white line over eye (may have a little bit of white in the supraloral area).


Ecuador and Peru, more specifically in the dry coastal lowland of North East Peru and just into Ecuador.


This is a monotypic species[1].
It has in the past been considered a subspecies of Mangrove Swallow, but recent DNA data indicate that the closest relative of Mangrove Swallow is White-winged Swallow.


Dry savanna, coastal salt lagoons and arable land.



Builds a nest inside an existing cavity, and willingly uses artificial boxes. Clutch size averages between 2.5 and 3, slightly larger in later nesting attempts.


Food consists of insects.


  1. Clements, J. F., T. S. Schulenberg, M. J. Iliff, T. A. Fredericks, J. A. Gerbracht, D. Lepage, S. M. Billerman, B. L. Sullivan, and C. L. Wood. 2022. The eBird/Clements checklist of Birds of the World: v2022. Downloaded from https://www.birds.cornell.edu/clementschecklist/download/
  2. SACC baseline read in September 2009
  3. Stager et al. 2012. Ornithologia Neotropical 23:95-112
  4. Restall et al. 2006. Birds of Northern South America. Yale University Press. ISBN 9780300124156

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