Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1956 0 13:45
1958 0 4:00
1977 0 29:30
1978 0 27:30
1982 0 3:00
1986 0 50:00
1987 1 56:35
2001 0 0:00
2002 0 0:00
2003 0 12:30
2004 0 44:15
2005 19 1018:50
2006 8 647:30
2007 16 816:41
2008 11 648:15
2009 1 446:08
2010 6 645:00
2011 14 681:30
2012 2 422:55
2013 6 613:10
2014 17 473:05
2015 7 560:45
2016 1 427:55
2017 10 576:05
2018 1 430:45
2019 2 455:27
2020 13 506:07
2021 7 824:55
 
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