- Italy, Gargano (with University of Napoli, University of Zurich & University of Mainz): work on Ophrys
- Austria, Lower Austria, Neue Traisen: work on Orchis militaris pollination
- Austria, Styria, Upper Enns valley: work on Iris sibirica pollination
- Germany, BW, Kugler Hang/Horb: work on Orchis militaris pollination
- Germany, BW, Eriskircher Ried: work on Iris sibirica pollination
- Germany, BW, Radolfzeller Aachried: work on Iris sibirica pollination
Field work 2023
- Greece, Crete: work on Ophrys
- Italy, Gargano (with University of Napoli & University of Mainz): work on Ophrys
- Austria, Lower Austria, Neue Traisen: work on Orchis militaris pollination
- Austria, Lower Austria: work on Ophrys
- Germany, BW, Kugler Hang/Horb: work on Orchis militaris pollination
- Germany, BW, LK Göppingen: work on Orchis militaris pollination
- Germany, BW, various sites: work on Ophrys
Field work 2022
- Italy, Napoli and environs (with University of Napoli): work on Ophrys sphegodes s.l.
- Austria, Lower Austria, Neue Traisen: work on Orchis militaris pollination
- Germany, BW, Kugler Hang/Horb: work on Orchis militaris pollination
- Germany, BW, LK Göppingen: work on Orchis militaris pollination
