What is the source of pressure that has made coyotes switch to nocturnal behavior?

Coyotes are naturally crepuscular, meaning that they are most active at dawn and dusk. This is due to a number of factors, including the fact that their primary prey species are also most active at these times and that they are less likely to encounter human activity during these hours. While coyotes may sometimes be seen during the day, they typically become more active at night when there is less light and human disturbance.