It was not unlike any night's nocturnal hallucination.
His ears perked up at the mention of Dean's nocturnal adventure.
Bats are social, nocturnal and they migrate to a warmer climate, or hibernate.
The features by which the treesnakes are distinguished are still more developed in the whip-snakes (Dryophis), whose excessively slender body has been compared to the cord of a whip. Although arboreal, like the former, they are nocturnal in their habits, having a horizontal instead of a round pupil of the eye.
They are not nocturnal, but most active in the morning and evening, remaining seated or curled up among the branches during the heat of the day.