Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1956 5 13:45
1958 4 4:00
1977 0 29:30
1978 0 27:30
1982 0 3:00
1986 0 50:00
1987 2 56:35
2001 0 0:00
2002 0 0:00
2003 0 12:30
2004 0 44:15
2005 73 1018:50
2006 17 647:30
2007 42 816:41
2008 135 648:15
2009 34 446:08
2010 49 645:00
2011 39 681:30
2012 24 422:55
2013 7 613:10
2014 16 473:05
2015 36 560:45
2016 22 427:55
2017 28 576:05
2018 10 430:45
2019 139 455:27
2020 58 423:22
 
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