Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1956 0 13:45
1958 0 11:00
1959 0 3:20
1960 0 1:45
1961 0 8:30
1962 0 0:00
1963 0 8:00
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 2 1018:50
2006 0 647:30
2007 0 816:41
2008 0 648:15
2009 0 446:08
2010 0 645:00
2011 1 681:30
2012 0 422:55
2013 0 613:10
2014 4 473:05
2015 3 560:45
2016 3 427:55
2017 0 576:05
2018 3 430:45
2019 1 455:27
2020 0 506:07
2021 4 1023:39
2022 0 424:55
 
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