Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1956 11 13:45
1958 6 4:00
1977 22 29:30
1978 52 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 25 44:15
2005 5182 1018:50
2006 1623 647:30
2007 1829 816:41
2008 1465 648:15
2009 1501 446:08
2010 2479 645:00
2011 1161 681:30
2012 456 422:55
2013 952 613:10
2014 842 473:05
2015 1154 560:45
2016 1144 427:55
2017 705 576:05
2018 827 430:45
2019 1040 455:27
2020 1176 506:07
2021 1259 676:28
 
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