Buff-collared Nightjar

The buff-collared nightjar is 22 to 23 cm (8.7 to 9.1 in) long. "A. r. ridgwayi" weigh 39.8 to 61.0 g (1.4 to 2.2 oz); one male A. r. troglodytes weighed 51.0 g (1.8 oz). The head, upperparts, and tail are brownish gray with gray, cream, and rust markings. It has a bright cinnamon buff collar on the hindneck and a narrow buffy white band under the throat. The wings are brownish black with cinnamon buff bands. The breast is brownish gray and the belly tan with dark brown bars. The ends of the two outermost tail feathers have much white in the male and a small amount of buff in the female. Voice: The male buff-collared nightjar's song is a "long rising, accelerating series of cuk notes ending in cuk-a-cheea that drops suddenly at the end." Both sexes make "chuck" calls; males give a "quirr" call. It typically sings the most at dawn and dusk but will continue intermittently through the night. It sings nightly between mid May and early August and infrequently during the rest of the year.