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 10 50:00
1987 40 56:35
2001 0 0:00
2002 0 0:00
2003 0 12:30
2004 3 44:15
2005 91 1018:50
2006 53 647:30
2007 32 816:41
2008 29 648:15
2009 21 446:08
2010 54 645:00
2011 54 681:30
2012 18 422:55
2013 29 613:10
2014 15 473:05
2015 19 560:45
2016 12 427:55
2017 7 576:05
2018 15 430:45
2019 13 455:27
2020 7 506:07
2021 15 683:43
 
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