Disclosure statement

Dr Bryan Lessard receives funding from the Australian Biological Reresources Study.

You are watching: Where do flies sleep at night



A few of Australia’s beautiful flies hosted at CSIRO’s Australian National Insect Collection in Canberra. CSIRO/Bryan Lessard

Flies require beauty sleep too

We have fine-tuned body clocks, or circadian rhythms, that assist us autumn asleep and wake up at about the very same time each day. When the sun sets, your eye provides two sleepy proteins called tim and also per. These tell your brain to go to sleep. When the sun comes up, sunlight enters your eye and also breaks these proteins, letting you wake up and begin your day.

Flies and other daytime pets likewise have these sleepy proteins in their eyes. For nocturnal pets, like most mosquitoes, the cycle is reversed.

Read more: Curious Kids: Do animals sleep choose people? Do snails sleep in their shells?

Have you ever wondered why adults say you shouldn’t stare at your display at night? This is because the blue light from a phone, tablet or computer system screen deserve to stop these sleepy proteins from telling your brain to acquire exhausted. This likewise happens to flies once they are trapped in our kitchen and also retained awake by the fluorescent light.

Fun fly facts

You’ve most likely noticed a lot more flies buzzing approximately in summer than winter. This is because flies and also other insects are cold-blooded, definition they can’t store warmth themselves and also their body temperature is impacted by the external temperature.

In the summer when it’s hot, flies are super energetic and buzz roughly all day. In winter, adult flies are too cold to move and also die off. At the exact same time, the larvae continue to be in the cocoon, or pupal phase, waiting to turn right into adults once spring starts. When the season transforms, the flowers begin to bloom and also the freshly hatched adult flies have actually nectar to drink. While they drink, they additionally get extended in pollen and aid pollinate the plant.

Did you know that without flies, tright here would certainly be no chocolate? This is bereason the just known pollinator of the cocoa plant that gives us cocoa is a tiny fly, around the size of a pin head.

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So the following time you’re in the garden on a warm day, examine the undersides of leaves and try to spot a sleepy fly!

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