take part in the inventory of rare species of bats in Vantaa

The Mont Ventouu Regional Nature Park has launched an inventory of bats in five Vaucluse municipalities to create an atlas of municipal biodiversity. The aim is to identify colonies present during the breeding season in homes, especially rare species.

Did you know that bats fly with their hands? This gives it the scientific name chiroptera, derived from the Greek “chiro” (main) and “ptera” (wing).

This is one of the many unknown things about this little animal, which had a bad reputation from the beginning. Often presented as a bloodsucker, the bat is actually a fascinating mammal.

In addition to flying with her hands, she sees with her ears … and most often she looks at the world upside down, upside down.

It is also an important part of biodiversity, a true indicator of good ecosystem health. Not to mention his talent as an insectivorous, capable of swallowing more than 1,000 mosquitoes a night.

What seems to be his head is immediately more cute. And rejoice when you see them spinning over your house.

Between May and August there is a period of reproduction. inFemales unite to give birth to and raise their only cubs.

It was at this time that the Ventu Regional Nature Park was selected to conduct an inventory of the species present in Weson-la-Romain, Creste, Antrecho, Focon and Puymer, in order to compile an atlas of municipal biodiversity.

To do this, the park asks residents to report the presence of bats in their homes. Eric Durr, the chiroprologist responsible for this inventory, has already had 17 reports. L.his first readings were made last week.

“We went there, we took pictures and listened, that is, we try to catch the sonar that radiates bats at night, placing recorders, explains Eric Durr. To With the help of these sonar, we are able to identify species, because each species has a special radiation for navigation at night.

There are 35 species in France, including 24 in Vaucluse. The most common are pipistrels. A small animal from 3 to 5 cm, and barely laid a few grams, which willingly hides under the roof tiles.

“We are looking for colonies that can be seen in attics or basements, these are usually rarer species.” says a wildlife expert.

More rare and endangered. With full urbanization, bats are deprived of their natural habitat and must adapt to survive.

“Some species take hollow trees for reproduction, others use rocks or caves, they have adapted to humans using houses, basements and attics.”

The researched Ventu sector, rich in old buildings, provides many housing opportunities for these species, which often choose to live in traditional stone houses or abandoned houses. Sometimes also churches.

“Females need water to feed their young, we’ve been looking for holes to find them, and there aren’t that many. People say they see them flying over the pools, so they have to come and drink in the pool. ” , adds Eric Durr.

“We are still waiting for reports of colonies, so far we have little,” Says Eric Durr. He especially hopes to cross paths with Petit horseshoe, big horseshoe, small mouse-eared and large mouse-eared bat. The largest of these bats have a wingspan of 40 cm.

Residents of the study area can contact Eric Durr until August. After that, the bats will change their shelter. “Around mid-August, they leave their roosting grounds and go to other places to find themselves in winter-December wintering grounds, which are often different from nesting sites.” clarifies the chiropterologist.

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