A beard like the European nightjar is missing. The variegated plumage is much paler than the European nightjar. The European nightjar is crepuscular and nocturnal. The variegated plumage resembles the European nightjar. The English word 'nightjar' originally referred to the European nightjar. When disturbed they may perch lengthwise on a branch, reminiscent of the similar-sized European nightjar. The European nightjar is long, with a wingspan. The leucocytozoon blood parasite "L. caprimulgi" is rare in the European nightjar. Similarly, some ground-nesting birds, including the European nightjar, select a resting position facing the sun.