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 3 1018:50
2006 2 647:30
2007 3 816:41
2008 0 648:15
2009 0 446:08
2010 0 645:00
2011 2 681:30
2012 3 422:55
2013 4 613:10
2014 4 473:05
2015 0 560:45
2016 1 427:55
2017 5 576:05
2018 1 430:45
2019 0 455:27
2020 1 506:07
2021 1 930:34
 
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