Yes, flies sleep at night! Like many other animals, flies need rest after a day of activity.
While it might not look like human sleep, flies enter a state of reduced activity and responsiveness that is considered sleep. Before sunset, flies seek safe places to rest, much like we do before going to bed. They become less active and less responsive to external stimuli, indicating a sleep-like state. So, after a busy day of buzzing around, flies do get tired and rest at night.
