Forester Frans Kapteijns shares his knowledge of nature every week. Everyone can submit questions via [email protected]. This time, Frans pays attention to, among other things, an early moth and a found kievits flower that was once rare.

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What wonderful animal was on my door of the meter cupboard?
Jovanka van Delft saw a wonderful animal sitting on the door of the meter cupboard and wondered which animal she had with. The beast is a moth with the beautiful name Agate butterfly. It may be that this moth survived the winter and has shown itself to Jovanka. The real season on which the new agate butterflies are “born” is May. On the other hand, it can also be a fresh moth that, just like the Meikevers yesterday, crawled out of the Cocon early. Agate butterflies are real moths, which belong to the large family of owls. Of this family of night freight people, it is suspected that more than 25,000 species are flying around in the world. The front wing of the agate butterfly has a length of up to 25 millimeters. You can come across caterpillars of the agate butterfly almost everywhere. They live on herbs such as nettle and deaf nettle, shrubs – hazel and blackberry – and trees such as the summer oak and the birch. After the caterpillar has eaten, it will hibernate as a caterpillar, but can also be done as a doll. That is already very special. But what makes this moth even more special is that you can even encounter the caterpillar of the agate butterfly in mild winters.

The Kievitsbloem was once a rarity (photo: Mark van de Goor)
The Kievitsbloem was once a rarity (photo: Mark van de Goor)

Handled unknown plant with flour, is this a exotic species?
During a walk, Mark van de Goor met an unknown flowering plant and he wondered if it might be a exotic species or whether the plant had been planted by someone. In the photo he sent I saw a plant that I immediately recognized, because it is a lapwing flower. Kievitsbloemen are native to our country, but only in certain areas. So they are very rare and originally wild lapwefore in our country along the Overijsselse Vecht, the Weteringen in Zwolle, the Black Water and in a few places along the IJssel. You also saw them in the peat meadow area in South Holland. Unfortunately, the bulbs are, because this is a bulb crop, previously stolen and slowly came on the market. Now you can buy them in every garden center, including the white variant and so nowadays they appear in more places in our country. They are often suddenly there and that has to do with the fact that it takes eight years before they flower from seed. But it may also be that there have been kievits flowers in the garden of someone and that the bulbs suddenly end up in a nature reserve when cleaning up or the other design of the garden. I think the latter plays a role in finding a Kievitsbloem by Mark.

European praying grid (Photo: Carel Kuijten)
European praying grid (Photo: Carel Kuijten)

SECTION Beautiful photos
And then you will come across this on the table on a terrace a European praying grid. The fantastic photo was taken by photographer Carel Kuijten

Archelogy Day on Fort Giessen (Photo: Beautiful Gorinchem)
Archelogy Day on Fort Giessen (Photo: Beautiful Gorinchem)

Natural tip; Archeology Day at Fort Giessen
Saturday, April 12 from 10:00 am to 4:00 pm

Everything to be experienced
There is plenty to do this day for young and old. With a detector, children can look for hidden treasures on the fort, such as coins or bones. You can also learn everything about prehistoric hunting methods. In addition, the children and their parents can learn to make bowls and jars of clay, or learn to shoot with arrow and arch. You get hungry from all those activities, but luckily everyone can take care of something tasty: you can bake pancakes and cookies on a stone.

Finally
You can search even further with a ‘Kraak the code’ search hunt. Of course you can also walk around freely on the fort site and in the fort, possibly under the guidance of a guide.

More information:
• Reservation for this day is not necessary.

• Departure place; Fort Giessen Giessensesteeg, Giessen

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