White-throated Swift (Aeronautes saxatalis) [XC552937]
by Bobby Wilcox from Kwaamii Point, near Mt. Laguna, San Diego County, California, United States (flight call)
White-throated Swift (Aeronautes saxatalis) [XC362534]
by from Colorado National Monument, Mesa County, Colorado, United States (flight call)
Subspecies
Closely related to White-tipped Swift (Aeronautes montivagus).
The following 2 subspecies are recognised:
saxatalis Woodhouse, 1853 - South-western Canada south through western USA to southern Mexico (Oaxaca) west of Caribbean lowlands.
nigrior Dickey & van Rossem, 1928 - Southern Mexico (Chiapas) to central Honduras.