For a while I already noticed that a couple of pigeons has been examining the Glaspalast and was obviously quite attracted by the roof rails as a nesting site. As background information for this: Pigeons form life long monogamous couples and get about 10 years old.
Therefore it was not so surprising as I saw one day that the couple started to nest right below our office window. However the nest didn’t survive the rain at the end of the week – one will see if the pigeons learned from that and will try it somewhere else in the future.
The following pictures are taken through the office window which can’t be opend at this position – therefore the picture quality is not very good: