Caprimulgiformes

Aegothelidae - Owlet-nightjars are small nocturnal birds related to the nightjars and frogmouths.

Podargidae - The frogmouths are a group of nocturnal birds related to the nightjars.

Caprimulgidae - Nightjars are medium-sized nocturnal or crepuscular birds with long wings, short legs and very short bills.

Nyctibiidae - The potoos are a family, Nyctibiidae of near passerine birds related to the nightjars and frogmouths.

Steatornithidae - Oilbirds are related to the nightjars and usually placed with these in the order Caprimulgiformes.