Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1956 1 13:45
1958 0 4:00
1977 16 29:30
1978 17 27:30
1982 0 3:00
1986 30 50:00
1987 13 56:35
2001 0 0:00
2002 0 0:00
2003 1 12:30
2004 7 44:15
2005 875 1018:50
2006 107 647:30
2007 936 816:41
2008 132 648:15
2009 78 446:08
2010 502 645:00
2011 326 681:30
2012 51 422:55
2013 109 613:10
2014 234 473:05
2015 62 560:45
2016 114 427:55
2017 69 576:05
2018 119 430:45
2019 36 455:27
2020 97 506:07
2021 38 683:43
 
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