When do flies throw up

Curious Kids is a series for children of all ages. Do flies really throw up on my food when they land on it? Suddenly you spot a fly headed your way, homing in on your food with help from its compound eyes and antennae. It manages to escape your swatting, lands on the sandwich and then seems to throw up on it!

It can look kind of gross, but the fly might be just airing out its own digested food, or spitting on yours. Most of the over , known fly species have no teeth , so they cannot chew solid food.

Their mouthparts are like a spongy straw. Once they land on your food, they need to release digestive juices to liquefy it into a predigested, slurpable soup they can swallow. In short, some flies are on a liquid diet. To fit more food in their stomachs, some flies try to reduce the liquid in what they have already eaten. They regurgitate food into vomit bubbles to dry it out a bit.

Once some water has evaporated they can ingest this more concentrated food. Rocket Lab is hoping to advance its reusability program one step forward tonight, when it will attempt to recover the booster from its Electron rocket for the third time.

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Close this content. Read full article. A fly regurgitating digestive juices. Though believed to be native to Asia, house flies now inhabit nearly every corner of the globe. With the exception of Antarctica and perhaps a few islands, house flies live everywhere people do.

House flies are synanthropic organisms, meaning they benefit ecologically from their association with humans and our domesticated animals. As humans throughout history traveled to new lands by ship, plane, train, or horse-drawn wagon, house flies were their travel companions. Conversely, house flies are rarely found in the wilderness or in places where humans are absent. Should humankind cease to exist, house flies might share our fate.

As an order, true flies are ancient creatures that appeared on Earth during the Permian period, over million years ago. But house flies seem to be relatively young, compared to their Dipteran cousins. The earliest known Musca fossils are only 70 million years old. This evidence suggests the closest ancestors of house flies appeared during the Cretaceous period, just before the infamous meteorite fell from the sky and, some say, triggered the extinction of the dinosaurs.

Were it not for environmental conditions and predation, we'd be overrun by house flies. Musca domestica has a short life cycle — just 6 days if conditions are right — and a female house fly lays an average of eggs at a time.

Scientists once calculated what would happen if a single pair of flies were able to reproduce without limits or mortality to their offspring. The result? Those two flies, in just 5 months' time, would produce ,,,,,, house flies, enough to cover the planet several meters deep.

Hear that buzzing sound? That's the rapid movement of a house fly's wings, which can beat up to 1, times per minute. That's no typo. It may surprise you to learn, then, that they're generally slow fliers, maintaining a speed of about 4. House flies move when environmental conditions compel them to do so. In urban areas, where people live in close proximity and there is plenty of garbage and other filth to be found, house flies have small territories and may only fly 1, meters or so.

But rural house flies will roam far and wide in search of manure, covering up to 7 miles over time. The longest flight distance recorded for a house fly is 20 miles. House flies feed and breed in the things we revile: garbage, animal dung, sewage, human excrement, and other nasty substances.

Musca domestica is probably the best known and most common of the insects we collectively refer to as filth flies.