The winter diet for birds is less varied than during the other seasons. Human assistance seems to be appreciated as well even if food supply in inner cities appears to be abundant with huge amounts of wasted food in streets ans backyards. The different diets of different species are not easy to cater for. It is a two way learning and adaptation process. With a narrower range of birds feeding in cities, the task is easier than it used to be. Bringing back more diversity of birds in general starts with offering different nutrients as well. A long way to go.
