Northern rough-winged swallow

The northern rough-winged swallow (Stelgidopteryx serripennis) is a small, migratory swallow. It is very similar to the southern rough-winged swallow, Stelgidopteryx ruficollis. The genus name, Stelgidopteryx, is from Ancient Greek and means 'scraper wing' and the species name, serripennis, is derived from Latin and means 'saw feather'. In the common name, 'rough-winged' refers to the serrated edge feathers on the wing of this bird; this feature would only be apparent when holding this bird.