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 0 56:35
2001 0 0:00
2002 0 0:00
2003 0 12:30
2004 0 44:15
2005 133 1018:50
2006 228 647:30
2007 439 816:41
2008 409 648:15
2009 140 446:08
2010 236 645:00
2011 93 681:30
2012 200 422:55
2013 518 613:10
2014 51 473:05
2015 39 560:45
2016 117 427:55
2017 66 576:05
2018 30 430:45
2019 54 455:27
2020 182 506:07
2021 339 944:54
 
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