Species: Whooper Swan (Cygnus cygnus)

YearArter/grupperLocalitiesParticipantsObservations
20201464563
20191444059
20181514854
20171282831
20161353450
20151534859
20141232325
20131242353
20121444351
20111222227
20101262326
20091121213
200819910
20071666
20041222
20031111
19941222
Total1320279532