Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1956 0 13:45
1958 0 4:00
1977 1 29:30
1978 0 27:30
1982 0 3:00
1986 0 50:00
1987 3 56:35
2001 0 0:00
2002 0 0:00
2003 0 12:30
2004 0 44:15
2005 15 1018:50
2006 8 647:30
2007 7 816:41
2008 11 648:15
2009 8 446:08
2010 8 645:00
2011 8 681:30
2012 6 422:55
2013 5 613:10
2014 7 473:05
2015 7 560:45
2016 2 427:55
2017 7 576:05
2018 3 430:45
2019 1 455:27
2020 0 506:07
2021 3 956:39
 
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