Survey of wintering Whooper Swans Cygnus cygnus in January 2015, and habitat shifts 1995 - 2015.
As wintering Whooper Swans Cygnus cygnus have shiftedtheir winter feeding habitats from water to terrestrialones, the International Waterfowl Counts, covering onlycoastal and lake sites since its start in 1967, cannot monitortrue population change. Therefore, special surveyscovering also the terrestrial habitats have been organizedin mainland NW Europe every ive years since 1995. InJanuary 2015, a
