Southern rough-winged swallow (Stelgidopteryx ruficollis)
Wikipedia eBird Xeno-Canto
Arenal hike southern rough-winged swallow tentative ID by MerlinBirdID. 2018-02-28 10.47.32 Costa Rica
Classification: Genus Stelgidopteryx; Family Swallows (Hirundinidae)
General:
The southern rough-winged swallow (Stelgidopteryx ruficollis) is a small swallow. It was first formally described as Hirundo ruficollis by French ornithologist Louis Vieillot in 1817 in his Nouveau Dictionnaire d'Histoire Naturelle.[2]
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First documented observation : 2018-02-28 in Costa Rica.