World Bird List

Species factsheet
Northern Rough-winged Swallow (Stelgidopteryx serripennis)

Order: Stelgidopteryx serripennis
Family: Swallows, Martins (Hirundinidae)

Voices can be found here (external link)
Subspecies and Distribution
Subspecie Distribution
serripennis se Alaska, s Canada to wc, sc and se USA
psammochroa sw USA to sw Mexico
fulvipennis c Mexico to Costa Rica
ridgwayi n Yucatán Pen. (se Mexico)
stuarti Veracruz, Oaxaca and Chiapas (se Mexico) to e Guatemala
burleighi s Yucatán Pen. (se Mexico) and Belize