Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1956 0 13:45
1958 0 4:00
1977 62 29:30
1978 127 27:30
1982 0 3:00
1986 9 50:00
1987 232 56:35
2001 0 0:00
2002 0 0:00
2003 0 12:30
2004 15 44:15
2005 31344 1018:50
2006 13241 647:30
2007 20976 816:41
2008 16230 648:15
2009 24461 446:08
2010 7701 645:00
2011 30551 681:30
2012 18369 422:55
2013 10102 613:10
2014 17254 473:05
2015 17935 560:45
2016 8426 427:55
2017 39913 576:05
2018 14363 430:45
2019 13557 455:27
2020 19380 506:07
2021 24488 771:15
 
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