Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1956 0 13:45
1958 0 4:00
1977 307 29:30
1978 9 27:30
1982 0 3:00
1986 1226 50:00
1987 4456 56:35
2001 0 0:00
2002 0 0:00
2003 0 12:30
2004 1556 44:15
2005 44679 1018:50
2006 59977 647:30
2007 26962 816:41
2008 17291 648:15
2009 11010 446:08
2010 10418 645:00
2011 38474 681:30
2012 28581 422:55
2013 16152 613:10
2014 31069 473:05
2015 25905 560:45
2016 28958 427:55
2017 39311 576:05
2018 21521 430:45
2019 19866 455:27
2020 8893 423:22
 
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