Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1956 0 13:45
1958 0 11:00
1959 0 3:20
1960 0 1:45
1961 0 8:30
1962 0 0:00
1963 0 8:00
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 0 44:15
2005 39 1018:50
2006 43 647:30
2007 26 816:41
2008 135 648:15
2009 78 446:08
2010 198 645:00
2011 134 681:30
2012 96 422:55
2013 85 613:10
2014 80 473:05
2015 108 560:45
2016 115 427:55
2017 60 576:05
2018 36 430:45
2019 21 455:27
2020 8 506:07
2021 22 1023:39
2022 23 353:09
 
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