Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1956 22 13:45
1958 0 4:00
1977 7 29:30
1978 4 27:30
1982 0 3:00
1986 28 50:00
1987 90 56:35
2001 0 0:00
2002 0 0:00
2003 0 12:30
2004 66 44:15
2005 8324 1018:50
2006 5910 647:30
2007 7116 816:41
2008 4948 648:15
2009 2243 446:08
2010 3394 645:00
2011 6122 681:30
2012 5316 422:55
2013 9272 613:10
2014 4532 473:05
2015 2836 560:45
2016 3081 427:55
2017 5036 576:05
2018 5757 430:45
2019 5332 455:27
2020 1264 413:07
 
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