Stock Photo - 17 August 2023, North Rhine-Westphalia, Gemünd: Sebastian Fliederbusch, biologist at the Eifel National Park, walks over the Dreiborn Heights with a landing net to register species diversity. The national park administration is conducting a new butterfly monitoring program. Photo: Oliver Berg/dpa. - Gemünd/North Rhine-Westphalia/Germany

Stock Photo: 17 August 2023, North Rhine-Westphalia, Gemünd: Sebastian Fliederbusch, biologist at the Eifel National Park, walks over the Dreiborn Heights with a landing net.

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