Great numbers of birds have been seen flocking in the Augarten. Is this in preparation for the swap? Scientific opinion believes one reason could be the more plentiful food sources in Cannizaro due to London pollution creating the ideal habitat for many varieties of insect. Dr Hans Hoffberg Graz of the University of Biological Sciences Wien states "Die Umweltbedingungen sind weit günstiger in Cannizaro für eine große Zahl von Arten"
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