Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1956 2 13:45
1977 1 29:30
1978 0 27:30
1982 0 3:00
1986 1 50:00
1987 0 56:35
2001 0 0:00
2002 0 0:00
2003 0 12:30
2004 1 44:15
2005 58 1018:50
2006 28 647:30
2007 71 816:41
2008 30 648:15
2009 18 446:08
2010 14 645:00
2011 37 681:30
2012 30 422:55
2013 26 613:10
2014 10 473:05
2015 5 560:45
2016 12 427:55
2017 14 576:05
2018 4 430:45
2019 3 455:27
2020 9 397:09
 
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