While walking past this signpost yesterday, outside entrance N at the University of Southern Denmark, I heard a familiar sound. Baby birds, hungry ones too! I stopped and listened carefully and tried to peer into the hollow parts of the sign. I couldn’t see anything, but the sound was very clear. I stood and waited, and watched for a few moments. Out flew an adult Tree Sparrow (Skovspurv). The clever parents have chosen this somewhat alternative home for their family. If you are walking by, keep your ears and eyes open!