City,Country,area ,human popn density,human popn size,Duration of checklist,Methodology,Source /citation,Taxonomic authority,other Hamburg,Germany,755.22 km2,2400/km2,"1,822,445 (in 2016)",pre-2005,,"Mulsow R. 2005 Hamburg. In Birds in European Cities (eds Kelcey JG, Rheinwald G), pp 127-151. St. Katharinen: Ginster Verlag.",,