Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
1956 230 13:45
1958 0 4:00
1977 5000 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 34 44:15
2005 16241 1018:50
2006 22356 647:30
2007 3964 816:41
2008 23685 648:15
2009 3180 446:08
2010 64277 645:00
2011 3247 681:30
2012 6907 422:55
2013 218 613:10
2014 3251 473:05
2015 19848 560:45
2016 1727 427:55
2017 2358 576:05
2018 622 430:45
2019 395 455:27
2020 530 506:07
2021 11 676:28
 
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