Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1956 0 13:45
1958 3 4:00
1977 2 29:30
1978 8 27:30
1982 0 3:00
1986 0 50:00
1987 26 56:35
2001 0 0:00
2002 0 0:00
2003 0 12:30
2004 6 44:15
2005 218 1018:50
2006 42 647:30
2007 178 816:41
2008 55 648:15
2009 26 446:08
2010 27 645:00
2011 51 681:30
2012 43 422:55
2013 32 613:10
2014 30 473:05
2015 56 560:45
2016 58 427:55
2017 25 576:05
2018 23 430:45
2019 29 455:27
2020 46 397:09
 
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