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 13 44:15
2005 1463 1018:50
2006 272 647:30
2007 791 816:41
2008 315 648:15
2009 119 446:08
2010 212 645:00
2011 488 681:30
2012 38 422:55
2013 167 613:10
2014 330 473:05
2015 497 560:45
2016 267 427:55
2017 92 576:05
2018 43 430:45
2019 218 455:27
2020 52 506:07
2021 323 771:15
 
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