Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1956 3 13:45
1958 0 4:00
1977 3 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 36 1018:50
2006 46 647:30
2007 103 816:41
2008 285 648:15
2009 220 446:08
2010 458 645:00
2011 738 681:30
2012 127 422:55
2013 899 613:10
2014 60 473:05
2015 265 560:45
2016 46 427:55
2017 121 576:05
2018 12 430:45
2019 7 455:27
2020 772 506:07
2021 74 824:55
 
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