Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1956 0 13:45
1958 1 4:00
1977 0 29:30
1978 98 27:30
1982 0 3:00
1986 0 50:00
1987 6 56:35
2001 0 0:00
2002 0 0:00
2003 0 12:30
2004 30 44:15
2005 1091 1018:50
2006 518 647:30
2007 363 816:41
2008 949 648:15
2009 258 446:08
2010 915 645:00
2011 780 681:30
2012 172 422:55
2013 414 613:10
2014 204 473:05
2015 368 560:45
2016 212 427:55
2017 1099 576:05
2018 593 430:45
2019 125 455:27
2020 98 423:22
 
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