Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
1956 0 13:45
1958 0 4:00
1977 7 29:30
1978 56 27:30
1982 0 3:00
1986 5 50:00
1987 705 56:35
2001 0 0:00
2002 0 0:00
2003 0 12:30
2004 39 44:15
2005 2753 1018:50
2006 1008 647:30
2007 783 816:41
2008 617 648:15
2009 811 446:08
2010 5846 645:00
2011 2685 681:30
2012 923 422:55
2013 2540 613:10
2014 396 473:05
2015 940 560:45
2016 1841 427:55
2017 965 576:05
2018 707 430:45
2019 882 455:27
2020 1345 506:07
2021 5449 956:39
 
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