Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1956 0 13:45
1977 5 29:30
1978 0 27:30
1982 0 3:00
1986 0 50:00
1987 0 56:35
2001 0 0:00
2002 0 0:00
2003 0 12:30
2004 6 44:15
2005 866 1018:50
2006 29 647:30
2007 933 816:41
2008 442 648:15
2009 392 446:08
2010 106 645:00
2011 270 681:30
2012 311 422:55
2013 242 613:10
2014 295 473:05
2015 525 560:45
2016 189 427:55
2017 207 576:05
2018 45 430:45
2019 45 455:27
2020 114 397:09
 
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