Bird "Infestation" under the attic

OK haven't read anything now either

There are also people who simply take it out from there. At the moment, they probably are not allowed to brood either.

So the aforementioned people get a ladder, remove everything, make sure the birds are outside, and then insert chicken wire.

The aforementioned people do this during the week when the neighbors are at work or in the evening around dusk.

If the birds are not yet breeding, the nest may be removed with the permission of the responsible nature conservation authority if a replacement breeding site is created

Have you actually looked at it up close? Maybe there isn't even a real nest there yet.

If the birds have not started nesting yet, the nest can be removed with the permission of the responsible nature conservation authority if a replacement breeding place is created

Sure, and it’s best to inform Greenpeace, Bund Naturschutz and ... beforehand....

In the end, you pay a processing fee so that the German administrative employee creates a case file with a two-line note.

Honestly... wait for the breeding season to be over and then remove it in the evening, finish the house facade – end of story. Maybe put one or two birdhouses in the garden next winter/spring and everything is fine....

Whenever I hear "inquiry at the office"... We asked, for example, about a wall for our hillside property, what is allowed there.... Promptly, it cost us the municipal council along with a meeting, and the necessary plan submission. + Special permit for almost 300€.
What have we learned from this? All the neighbors did it without permission....

Ignoring that is stupidity. Risking a 5 - 50,000.--€ fine ???? but there is always someone who thinks they know better. If the right person is watching ....