Matthew Studebaker / Common Nighthawk (Chordeiles minor), Montana

Rolf Nussbaumer / Male Lesser nighthawk {Chordeiles acutipennis} Texas, USA

Rolf Nussbaumer / Lesser nighthawk female with egg at nest {Chordeiles acutipennis} Texas, USA.

Jan Wegener/ BIA / Common Nighthawk (Chordeiles minor) flying, Texas

Jan Wegener/ BIA / Common Nighthawk (Chordeiles minor), Texas

Nate Chappell/ BIA / Lesser Nighthawk (Chordeiles acutipennis) flying, Arizona

Gerrit Vyn / Common Nighthawk (Chordeiles minor). Central Idaho. June.

Gerrit Vyn / Common nighthawk (Chordeiles minor) male roosting in the rain on a fence. Sublette County, Wyoming, USA. June.

Gerrit Vyn / Common nighthawk (Chordeiles minor) female roosting on a fence post. Sublette County, Wyoming, USA. June.

Alan Murphy / Common Nighthawk (Chordeiles minor), Texas

Alan Murphy / Lesser Nighthawk (Chordeiles acutipennis) flying at night, Arizona

Alan Murphy / Lesser Nighthawk (Chordeiles acutipennis) flying at night, Arizona

Nick Saunders / Common Nighthawk (Chordeiles minor), Saskatchewan, Canada

Glenn Bartley / Lesser Nighthawk (Chordeiles acutipennis), Costa Rica

Glenn Bartley / Common Nighthawk (Chordeiles minor), British Columbia, Canada

Bob Steele / Lesser Nighthawk (Chordeiles acutipennis) flying, Kern County, California

Bob Steele / Lesser Nighthawk (Chordeiles acutipennis) flying, Kern County, California

Bob Steele / Lesser Nighthawk (Chordeiles acutipennis) flying, Inyo County, California

Glenn Bartley / Common Nighthawk (Chordeiles minor), British Columbia, Canada

Glenn Bartley / Common Nighthawk (Chordeiles minor), British Columbia, Canada

Tui De Roy / Rufous bellied nightjar (Lurocalis rufiventris) Angel Paz reserve, Mindo region, Andean cloud forest, West slope, Tropical Andes, Ecuador

Mike Read / Common nighthawk (Chordeiles minor) in flight during daylight, Montana, USA

B&S Draker / Common Nighthawk (Chordeiles minor) adult at day roost on branch. Sinton, Corpus Christi, Coastal Bend, Texas, USA, May.

Rolf Nussbaumer / Lesser Nighthawk (Chordeiles acutipennis), adult on day roost. Laredo, Webb County, South Texas, USA, April.

Pete Oxford / Common Nighthawk (Chordeiles minor), Little St. Simon's Island, Georgia

Gerrit Vyn / Common Nighthawk (Chordeiles minor) in flight in evening light, Grant County, Washington, USA, June.

Murray Cooper / Sand-colored Nighthawk (Chordeiles rupestris) flying, Ecuador

Murray Cooper / Nacunda Nighthawk (Podager nacunda) flying, Colombia

Thomas Marent / Sand-colored Nighthawk (Chordeiles rupestris) chicks camouflaged on sand, Manu National Park, Peru

Michael Durham / Common Nighthawk (Chordeiles minor) portrait showing its large nocturnal eye, Kaibab National Forest, Arizona

Rolf Nussbaumer / Female Lesser Nighthawk (Chordeiles acutipennis) on camouflaged grounf nest, Lake Corpus Christi, Texas, USA. May 2003

Rolf Nussbaumer / Lesser Nighthawk (Chordeiles acutipennis) egg in camouflaged ground nest, Lake Corpus Christi, Texas, USA. May 2003

Rolf Nussbaumer / Lesser Nighthawk (Chordeiles acutipennis) chicks in camouflaged ground nest, Lake Corpus Christi, Texas, USA. May 2003

Rolf Nussbaumer / Common Nighthawk (Chordeiles minor) at day roost, High Island, Texas, USA. April 2001

Rolf Nussbaumer / Common Nighthawk (Chordeiles minor) on branch, Welder Wildlife Refuge, Sinton, Texas, USA. May 2005

Mike Wilkes / Common nighthawk {Chordeiles minor} Texas, UK

Shattil & Rozinski / Common nighthawk sleeping {Chordeiles minor} Colorado, USA

Pete Oxford / Sand coloured nighthawk {Chordeiles rupestris} flock resting, Manu National Park, Peru.

Tom Vezo / Lesser nighthawk on nest {Chordeiles acutipennis} Texas, USA.

Rolf Nussbaumer / Lesser nighthawk female camouflaged on ground {Chordeiles acutipennis} Texas,

Tom Vezo / Lesser Nighthawk (Chordeiles acutipennis) distraction display, Rio Grande Valley, Texas

Tom Vezo / Common Nighthawk (Chordeiles minor) skimming water off of lake while flying, Texas

Konrad Wothe / Nacunda Nighthawk (Podager nacunda) skimming water, Pantanal, Brazil

Gerry Ellis / Common Nighthawk (Chordeiles minor) resting on fence, northern Great Plains

Tom Vezo / Common nighthawk swoops with beak open to drink. {Chordeiles minor} Texas, USA.

Hermann Brehm / Lesser nighthawk in tree {Chordeiles acutipennis} Llanos del Orinoco, Venezuela, South-America

Glenn Bartley/ BIA / Nacunda Nighthawk (Podager nacunda) flying, Pantanal, Brazil

Glenn Bartley/ BIA / Nacunda Nighthawk (Podager nacunda), Pantanal, Brazil

Tim Zurowski/ BIA / Common Nighthawk (Chordeiles minor), Texas

Pete Oxford / Common Nighthawk (Chordeiles minor) camouflaged on branch, Rupununi, Guyana