Nightjars are medium-sized birds known for their camouflaged plumage, which helps them blend into their surroundings during the day. They are primarily nocturnal, meaning they are most active at night, and are often heard rather than seen. Their distinctive calls can be heard in various habitats, including forests, grasslands, and deserts. These birds are part of the family Caprimulgidae and are found on every continent except Antarctica. Nightjars feed on insects, catching them in flight with their wide mouths. Their unique behaviors and adaptations make them fascinating subjects for birdwatchers and nature enthusiasts alike.