Square-tailed saw-wing explained

The square-tailed saw-wing (Psalidoprocne nitens), also known as the square-tailed rough-winged swallow is a species of bird in the family Hirundinidae.It is native to the African tropical rainforest.

Description

It is dark green, almost black.^[1]

Subspecies

There are currently two recognised subspecies.^[2]

• P. n. nitens, the nominate subspecies, which occurs in Guinea, Sierra Leone, Ivory Coast, Ghana, Togo, Nigeria, Gabon, Congo and Angola.
• P. n. centralis, which occurs in northeast Democratic Republic of the Congo.

Notes and References

1. Fishpool . Lincoln D. C. . 2023-09-07 . Square-tailed Saw-wing Psalidoprocne nitens in the Democratic Republic of the Congo: identity and taxonomic status . Bulletin of the British Ornithologists' Club . 143 . 3 . 10.25226/bboc.v143i3.2023.a5 . 0007-1595. free .
2. Web site: Square-tailed Sawwing . Birds of the World . The Cornell Lab of Ornithology . 20 January 2021.