Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1956 27 13:45
1958 0 4:00
1977 19 29:30
1978 60 27:30
1982 1 3:00
1986 52 50:00
1987 44 56:35
2001 0 0:00
2002 0 0:00
2003 5 12:30
2004 2 44:15
2005 1165 1018:50
2006 1827 647:30
2007 1345 816:41
2008 1193 648:15
2009 970 446:08
2010 1664 645:00
2011 1816 681:30
2012 1105 422:55
2013 1700 613:10
2014 620 473:05
2015 798 560:45
2016 647 427:55
2017 987 576:05
2018 599 430:45
2019 417 455:27
2020 758 506:07
2021 1090 683:43
 
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