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 0 50:00
1987 0 56:35
2001 0 0:00
2002 0 0:00
2003 0 12:30
2004 0 44:15
2005 833 1018:50
2006 1010 647:30
2007 547 816:41
2008 481 648:15
2009 257 446:08
2010 521 645:00
2011 504 681:30
2012 254 422:55
2013 671 613:10
2014 181 473:05
2015 286 560:45
2016 242 427:55
2017 126 576:05
2018 99 430:45
2019 214 455:27
2020 0 506:07
2021 872 771:15
 
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