Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1956 0 13:45
1958 0 4:00
1977 14 29:30
1978 64 27:30
1982 15 3:00
1986 9 50:00
1987 7 56:35
2001 0 0:00
2002 0 0:00
2003 0 12:30
2004 8 44:15
2005 1073 1018:50
2006 776 647:30
2007 947 816:41
2008 732 648:15
2009 502 446:08
2010 354 645:00
2011 657 681:30
2012 483 422:55
2013 702 613:10
2014 306 473:05
2015 543 560:45
2016 258 427:55
2017 276 576:05
2018 281 430:45
2019 587 455:27
2020 148 506:07
2021 594 971:03
 
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