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Thank you my friend. Last night I put a light on the tree and even worse results, so tonight I will try again without the light.
Blessings!

in Russian, they are 'flying mices" xD

could you find their parking lot somewhere on the tree (not in the dark cave) ?... to capture them sleeping during the daylight, with a decent lighting seems a good oprion, but i have no idea is it possible... probably they put themselves to a hideous places..

No I cannot find the place where they sleep, as they come from high up in the mountains.
Would love to get them, but impossible my friend.
Blessings!