However , several if not all species of underwing moths have a second activity period exactly around noon , during which they are also regularly found on the wing for about 1 -- 2 hours each day .
They are generally most active about two hours after nightfall .
Several if not all species of underwing moths have a second activity period exactly around noon , during which they are also regularly found on the wing for about 1 -- 2 hours each day .
They are generally most active about two hours after nightfall .