Alan Murphy / Buff-collared Nightjar (Caprimulgus ridgwayi) calling, Arizona

Chien Lee / Collared Nightjar (Caprimulgus enarratus) camouflaged in leaf litter, Mantadia National Park, Madagascar

Alan Murphy / Buff-collared Nightjar (Caprimulgus ridgwayi) flying at night, Arizona

Alan Murphy / Buff-collared Nightjar (Caprimulgus ridgwayi), Arizona

Bernard Castelein / Collared nightjar (Caprimulgus enarratus ) resting on the ground, Andasibe-Mantadia National Park, Madagascar.

Enrique Lopez-Tapia / Collared nightjar (Caprimulgus enarratus) Andasibe-Mantadia National Park, Madagascar.

Enrique Lopez-Tapia / Collared nightjar (Caprimulgus enarratus) Andasibe-Mantadia National Park, Madagascar.

Nick Garbutt / Collared Nightjar (Caprimulgus enarratus) resting on leaf-litter beneath a Pandanus tree. Andasibe-Mantadia National Park, eastern Madagascar.

Nick Garbutt / Collared nightjar (Caprimulgus enarratus) perched on branch in rainforest understorey, Ranomafana National Park, south east Madagascar.

Inaki Relanzon / Collared nightjar (Caprimulgus enarratus) perched on branch, Mantadia-Andasibe National Park, Madagascar

Inaki Relanzon / Collared nightjar (Caprimulgus enarratus) perched on branch, Mantadia-Andasibe National Park, Madagascar

Inaki Relanzon / Collared nightjar (Caprimulgus enarratus) Mantadia-ANdasibe National Park, Madagascar

Pete Oxford / Collared nightjar (Caprimulgus enarratus) rainforest, Mantadia National Park. MADAGASCAR, endemic

Nick Garbutt / Collared nightjar on forest floor {Caprimulgus enarratus} Mantadia NP, E Madagascar

Nick Garbutt / Female Collared nightjar and two chicks {Caprimulgus enarratus} Mantadia NP, E Madagascar

Alan Murphy / Buff-collared Nightjar (Caprimulgus ridgwayi) calling, Arizona

Roland Seitre / Collared nightjar (Caprimulgus enarratus) camouflaged in leaf litter, Madagascar.

Christian Ziegler / Collared Nightjar (Caprimulgus enarratus) on nest, Madagascar