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Do Flies Fly at Night?

Published in Insect Behavior 2 mins read

Yes, flies can fly at night, though they are generally more active during the day.

Fly Activity Patterns

Flies, particularly houseflies, typically prefer daylight hours for their most active period. This is when they forage for food and engage in other typical fly activities. However, this doesn't mean they are completely inactive at night.

Why Flies Fly at Night

Although they are less active at night, flies can still be a nuisance. Here’s why they might be flying around after dark:

  • Seeking Shelter: Flies will look for a place to sleep at night, and this search can lead to them buzzing around your home even after sunset. The reference specifically states that flies can be a pest at nighttime when they are looking for a sleeping place.
  • Indoor Environments: Inside, you'll find them on floors, walls, and ceilings, often near windows.
  • Artificial Light: Lights on inside of a house can attract flies. So, while they aren't actively foraging, they might be drawn to these sources of light.

Where You Might Find Flies at Night

  • Floors: Flies sometimes settle down on the floor to rest.
  • Walls & Ceilings: Flies can be found on walls and ceilings where they try to sleep.
  • Windows: They are commonly seen near windows, both during the day and at night.

Summary Table

Time of Day Typical Fly Activity Location in House
Day Active: foraging Everywhere
Night Less active: seeking sleep Floors, walls, ceilings, near windows, attracted to lights

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