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Hello everyone,

last October I watched flies in conspicuous densities at a salty creek (foot of a Potash mountain, salt mining). Unfortunately, I couldn't get nearer (I sank in almost to my knees, a friend had to pull me out of this mud!). Despite this, can you say something to these flies? Are they maybe associated to the salty water?

Data: Germany, Lower saxony, Sehnde, Kaliberg, 60 m, 10 October 2020.

Best wishes,
Tina.