Crepuscular creatures are most active during twilight, unlike nocturnal or diurnal ones. Deer are another example of crepuscular animals, often seen at dawn and dusk.
Pro Tip 2/3
Not Just Dark
Crepuscular doesn't mean active at night, but specifically during the soft light of dawn and dusk. Though owls are thought to be crepuscular, many are actually nocturnal.
Pro Tip 3/3
Not Always Visible
Crepuscular animals can be hard to spot because of the low light during their active hours. Photographing crepuscular species requires skill due to the dim lighting conditions.