Lesser Nighthawk (Chordeiles acutipennis) [XC591811]
by Richard E. Webster from Laguna Division Conservation Area, Yuma County, Arizona, United States (call, song)
Lesser Nighthawk (Chordeiles acutipennis) [XC608809]
by Richard E. Webster from Whitewater Draw WA, near McNeal, Cochise Co, Arizona, United States (call, song, flight interaction calls)
Subspecies
Birds of Baja California formerly separated in subspecies inferior.
The following 7 subspecies are recognised:
texensis Lawrence, 1857 - South-western USA south to central Mexico.
littoralis Brodkorb, 1940 - Southern Mexico south through Central America to Costa Rica and possibly Panama.
acutipennis (Hermann, 1783) - Colombia east through Venezuela, Trinidad and Tobago and the Guianas and south through Brazil (absent from many parts of Amazonia) to northern Bolivia and probably Paraguay.