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 2 56:35
2001 0 0:00
2002 0 0:00
2003 5 12:30
2004 6 44:15
2005 506 1018:50
2006 142 647:30
2007 321 816:41
2008 275 648:15
2009 91 446:08
2010 73 645:00
2011 76 681:30
2012 7 422:55
2013 61 613:10
2014 45 473:05
2015 88 560:45
2016 47 427:55
2017 74 576:05
2018 23 430:45
2019 78 455:27
2020 12 506:07
2021 193 824:55
 
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