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 4 27:30
1982 0 3:00
1986 2 50:00
1987 0 56:35
2001 0 0:00
2002 0 0:00
2003 0 12:30
2004 0 44:15
2005 62 1018:50
2006 7 647:30
2007 4 816:41
2008 6 648:15
2009 9 446:08
2010 7 645:00
2011 12 681:30
2012 13 422:55
2013 31 613:10
2014 0 473:05
2015 3 560:45
2016 0 427:55
2017 19 576:05
2018 11 430:45
2019 7 455:27
2020 4 506:07
2021 13 936:39
 
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