Breeding cave
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The brood cave is a cave that is created by woodpeckers in the dead wood to lay eggs and raise the young. This tree holes, if the woodpeckers have left it, used by many other animals as a nesting site, such as the species of owl boreal owl , pygmy owl and tawny owl , as well as Dove or small mammals such as dormice and squirrels .
But rotting in trunks and branches of dead and living trees also serve as breeding grounds . Many bird species even create caves in the ground at the bank edges and steep walls of rivers, lakes and seas and in crevices of rocky cliffs. Even hollows in termite burrows , on the ground and in trees, serve as nests for some species. House sparrows , kestrels , barn owls and black redstart , to single out just a few native bird species, use crevices and holes in walls and building walls as nesting places.
Also pine marten use the caves. Abandoned woodpecker holes also serve a number of bat species as the noctule , the Bechstein bat , the brown long-ear , the Frans bat and the water bat (in the vicinity of water, backwaters , Auwald ) as a summer and winter quarter.
Therefore, trees with nest holes should be left, or suitable dead wood should be provided for them.