Like most other species of nightjar, Buff-collared Nightjar is nocturnal.
Buff-collared Nightjar forages for flying insects with sallies from a perch, which usually are 1-15. m above the ground (Johnston and Hardy 1959). Also may forage from perches on the ground (roads) (Bowers and Dunning 1997).
Buff-collared Nightjar in Arizona hold territories that are ca 100-150 m long (Bowers and Dunning 1997).
Buff-collared Nightjar presumably is monogamous.
Social and interspecific behavior
The nightjars are generally solitary and have no social behavior. They have very weak legs and usually perch directly on the ground or along a branch, or at most, walk a short distance across the floor.
There are no reports of predation on Buff-collared Nightjar?