Free English translation
Which tree is suitable? The entrance hole should be in the east, the approach as free of branches as possible. A mighty linden tree fulfills these requirements. I brought strong wire for fastening, but thick rope is more tree-friendly. The assembly high up is not entirely safe, because the ground is covered with leaves and the ladder could slide. But everything works out fine! What I'm learning new: Depending on the diameter of the entrance hole, the bird house can only inhabit certain bird species. The now rare blue, crested, swamp and fir tits need 26-28 mm (hanging height of the nesting aid 1.5-3.5 m), the great tit, on the other hand, already 32-34 mm. The entry holes should be coated with metal so that the great spotted woodpecker, for whom the little houses would be too small, doesn't get the idea of knockiing the holes bigger ...