Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1956 2 13:45
1958 0 4:00
1977 0 29:30
1978 0 27:30
1982 0 3:00
1986 0 50:00
1987 0 56:35
2001 0 0:00
2002 0 0:00
2003 0 12:30
2004 1 44:15
2005 12 1018:50
2006 20 647:30
2007 5 816:41
2008 7 648:15
2009 0 446:08
2010 8 645:00
2011 11 681:30
2012 7 422:55
2013 3 613:10
2014 5 473:05
2015 8 560:45
2016 2 427:55
2017 2 576:05
2018 2 430:45
2019 6 455:27
2020 6 506:07
2021 2 676:28
 
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