Because of their cryptic plumage and nocturnal habits, little is known about the breeding behavior of Chuck-will's-widows (Antrostomus carolinensis). Using temperature loggers and video-recordings, we quantified the incubation, brooding, and provisioning behavior of male and female Chuck-will's-widows in Adams County, Ohio, in 2011 and 2012. We located six nests, all 2-egg clutches laid on the ground. Four nests were successful, one was depredated, and one was abandoned. We quantified incubation behavior at all nests (mean  =  5.5 days; range  =  0.4–12.9 days). Adult Chuck-will's-widows incubated an average of 89.2% of the time, with females observed incubating more than males. Most incubation off-bouts (n  =  104) occurred at dawn (0400–0659; n  =  45) and dusk (1900–2200; n  =  48) and averaged 35 mins in duration. After hatching, the mean duration of brooding bouts was 20 mins (age of young  =  1–7 days). Both males and females provisioned young, and feeding rates were highest (P  =  0.003) during the hour immediately after sunset. The timing of off-bouts during incubation and provisioning visits after hatching suggest that Chuck-will's-widows in our study foraged primarily at dawn and dusk. Previous authors have noted that nightjars are visual predators and, therefore, their foraging behavior may be constrained by light levels.