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 5 56:35
2001 0 0:00
2002 0 0:00
2003 6 12:30
2004 44 44:15
2005 4257 1018:50
2006 4289 647:30
2007 5898 816:41
2008 2004 648:15
2009 1409 446:08
2010 3854 645:00
2011 2450 681:30
2012 3508 422:55
2013 3660 613:10
2014 802 473:05
2015 1365 560:45
2016 6700 427:55
2017 3021 576:05
2018 1751 430:45
2019 1943 455:27
2020 1162 506:07
2021 2522 676:28
 
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