It’s a nesting box. A prefabricated family home for birds but not for the birds.
The plaque in German reads: Humans are only a part of the history of creation! We are dependant on all living creatures on our **earth**.
https://jennifernicholewells.com/2016/04/26/one-word-photo-challenge-box/
pictures imperfect blog 
Toller Fund… nicht das Vogelhäusschen.
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Wonderful image!
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