Interesting facts about rest and sleep

• Hornets are particularly active between 7 p.m. and 11 p.m., but occasionally fly throughout the night
• The reasons for this are probably that hornet larvae are also fed at night and there are fewer enemies around at night
• Like other insects, hornets are attracted to light sources, which is why they can come into the apartment through open windows at night

Are hornets nocturnal?

Actually are Hornets not only during the day, but also in the twilight and at night on the go. According to a study, in which the movement patterns of the animals with the help of a sensor and a camera were recorded, the giant wasps fly more intensely at dusk in summer between 19 and 23 o'clock. After that, the flight activities level off somewhat, so that in the deep night and into the early hours of the morning Only a few animals are still on the way in - however, the nocturnal activities do not fully work Succumb.

Thus, hornets are active both during the day and at night, which in turn differs from their relatives - the various wasp species - as well as from bees and Bumblebees differs. These insects only fly during the day and spend the night in their nests.

Why do hornets fly at night too?

There are several reasons for these nighttime activities. One is that the hornet larvae have a great appetite for protein-rich food and that is why they are also cared for at night - not as often as during the day, but there are real rest phases it in Hornet's Nest not. Such a hornet state consumes around half a kilogram of insects a day in its late summer peak! And since the state is not particularly large with an average of 400 to 700 animals, you have to hunt at all times.

Furthermore, at night there is a danger from enemies - hornets are a popular one for many birds Prey - less than during the day, also food competitors (again birds) are at this time inactive. There are plenty of nocturnal insects such as the moths mentioned above.

Light sources attract hornets

Hornets are attracted to light sources

Moths and other nocturnal insects are magically attracted to light. This also applies to hornets flying at night, which are always based on available light sources and can therefore get lost in the apartment in summer. Like all nocturnal insects, hornets orient themselves at dusk or dawn. Darkness at the brightest point of nature, the moon. This stands seemingly motionless in the sky and is therefore very suitable as a fixed point: the insects always keep an angle of approx. 40 degrees to the moon and manage to fly straight ahead. In contrast to during the day, the animals do not see particularly well at night.

If, however, an artificial light suddenly appears - such as a lamp or lantern - the insect takes this as a point of orientation and flies to the light. Unfortunately, such light sources are much closer than the distant celestial body and are therefore not suitable for the correct determination of the flight path. However, the hornet does not know this and ends up in your apartment in no time at all.

Hornet flies into the apartment, what to do?

Now the hornet is suddenly buzzing around your apartment and can no longer find its way out. Please do not grab your slipper or a newspaper to kill the animal - hornets are firstly rare and secondly are protected. The animals must not be killed or captured, as stipulated by the Federal Nature Conservation Act (BNatSchG). For the same reason, auxiliary measures such as insect spray or hairspray are also prohibited, especially since both represent a very excruciating kind of killing for the animals. But don't worry, you can still lure the hornet outside with a simple trick:

• Open the room window very wide.
• Place a light source (such as a candle) on the outer window sill.
• If the room is adjacent to a balcony, you can also put the light here.
• Turn off the light in the room.
• Wait.

After a while the hornet will orient itself towards the new light source and fly outside again. Now close the window and only then switch the light on again. Alternatively - and if you are feeling very brave - just wait for the hornet to settle on an easily accessible surface. Now quickly put a glass over the animal and slide a piece of cardboard over the opening. Carry the jar outside with the hornet and release the insect there.

If a hornet gets lost in the apartment, keep calm

How to keep hornets out of the apartment

However, you can also reliably prevent the animals from wandering around by closing the window openings with insect screens. This also has the advantage that in summer you can switch on the light even when the window is open and you do not have to fear an invasion of nocturnal insects. Hornets also do not like the scent of certain plants and avoid them. So make the ones listed below Potted plants on the windowsill:

• Lemon balm
• lavender
• basil
• peppermint

Furthermore, hornets are not particularly fond of tomatoes and incense, but both species are usually too big to be kept on the windowsill. But they are well suited for a pot culture on the balcony or terrace.

Digression

Are hornets dangerous?

When do hornets fly?

The hornet year begins, depending on the weather, between April and May, when the queens emerge from their winter quarters and start looking for a suitable nesting site. The first workers do not fly out until June, as they first have to hatch and develop into an adult animal. The hornet colony finally experiences its heyday in late summer, when around 400 to 700 animals may populate the nest and then there is hectic activity there.

From approx. From the end of August to September, the male animals, called drones, as well as the newly hatched young queens fly out on their wedding flight. In October, or at the latest in November, the last workers, the old queen and the drones die. During the day, hornets have two flight phases in which the animals are particularly busy are: The first phase is at noon, the second at dusk until early in the morning Night hours.

This very nice article by a beekeeper explains how a hornet's life works and provides further interesting information.

Do hornets actually sleep?

In view of the fact that hornets are practically on the move day and night during the summer months, the question arises whether the animals never sleep? In fact, it seems that the giant wasps do not need any sleep or rest. In any case, neither the workers nor the drones live very long: a maximum of four The lifespan of these animals is weeks, while your queen is the only one to live around a year can. This short span must of course be exploited, which is why sleep is superfluous and only robs life. Only in the very early morning hours does the nest sometimes come to a very brief standstill, where almost all animals stop for about half a minute to a minute and not even the antennae move.

What do hornets do in winter?

Almost the entire hornet colony dies in autumn. All that remains are the young queens hatched in late summer or autumn, who look for suitable winter quarters after mating. The animals like to dig themselves into the ground, but also use piles of wood or hollows. Many a hornet has already overwintered in a pile of firewood and then woke up early in the living room when the wood was carried to the fireplace.

Digression

What do hornets do in cooler weather?

Basically, hornets are more often on the move on warm and sunny days, while flight movements decrease sharply on cooler days. The reason for this is the fact that both the workers and the drones “heat” the nest on such days. To do this, the animals huddle together in the center and generate warmth with tiny movements of their wings. So busy, of course, they have less time to go hunting outside.

frequently asked Questions

There's a hornet's nest in front of my window. How do I get rid of this?

First of all: You are not allowed to remove the nest yourself, not smoke it out or kill the animals in any other way. Hornets are under nature protection, which is why you need a good reason and an official permit to remove the nest. You can usually apply for this at the Lower Nature Conservation Authority in your municipality. In addition, the nest should always be relocated by a specialist.

Hornet, wasp or bee: how do I distinguish the individual species from one another?

Hornets are the largest wasp species in Central Europe and also have a striking yellow-reddish color. These two characteristics alone make it easy to distinguish them from their relatives, the wasps. Bees, on the other hand, are even smaller and also more brownish in color.

How can I drive away hornets?

They are not allowed to kill, capture, or damage their nests to hornets. However, you can try to prevent the queen from building nests in the spring or drive the animals away by gentle means. Some essential fragrances are very suitable for this purpose, for example clove oil, lavender or lemon balm oil.