nocturnal

Artificial light that hampers nocturnal pollinators reduces plant reproductive success and fruit production.

WWF describes them as solitary, elusive and nocturnal and rarely spotted by humans.

The study, published last month in the journal Biological Conservation, found that Southland mountain lions became more nocturnal and less crepuscular — i.e., active at dusk or dawn — in popular recreation areas.

Mice are nocturnal and are "polyphasic sleepers" -- napping for a few minutes before arousing briefly to survey their environment and then resuming their slumber.

Four closely related civets, a small nocturnal animal found in Africa and Asia, have made the same geographical area in the rainforests of Borneo home.