I'm an amateur who loves nature and taking pictures of all kinds of critters. I am frightened by the accelerated loss of biodiversity. And I am grateful to everyone taking their time to confirm or correct my attempts at ID, as that allows me to learn more about my "models".
The reason I need to know more (aside from curiosity) is that I use my pictures to try and save green spaces, especially in the city. Find out more on my site www.wildeskoeln.de.
Or in this book about biodiversity in a former Jewish cemetery in Cologne, Germany (free pdf download):
https://www.bund-koeln.de/service/publikationen/detail/publication/biodiversitaet-in-der-millionenstadt-der-juedische-friedhof-in-koeln-deutz-gedenkort-voller-leben-eine-dokumentation-des-bund-koeln/