Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1956 0 13:45
1958 0 4:00
1977 0 29:30
1978 0 27:30
1982 0 3:00
1986 5 50:00
1987 5 56:35
2001 0 0:00
2002 0 0:00
2003 0 12:30
2004 1 44:15
2005 15 1018:50
2006 13 647:30
2007 12 816:41
2008 28 648:15
2009 8 446:08
2010 11 645:00
2011 25 681:30
2012 6 422:55
2013 9 613:10
2014 9 473:05
2015 38 560:45
2016 11 427:55
2017 20 576:05
2018 25 430:45
2019 8 455:27
2020 21 506:07
2021 14 771:15
 
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