Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1956 0 13:45
1958 0 4:00
1977 100 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 0 44:15
2005 9461 1018:50
2006 21305 647:30
2007 2547 816:41
2008 1484 648:15
2009 813 446:08
2010 4614 645:00
2011 4912 681:30
2012 981 422:55
2013 134 613:10
2014 10616 473:05
2015 3708 560:45
2016 661 427:55
2017 927 576:05
2018 24 430:45
2019 470 455:27
2020 1412 506:07
2021 16206 996:04
 
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