Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1956 5 13:45
1958 0 4:00
1977 38 29:30
1978 10 27:30
1982 0 3:00
1986 0 50:00
1987 0 56:35
2001 0 0:00
2002 0 0:00
2003 1664 12:30
2004 89 44:15
2005 58264 1018:50
2006 51018 647:30
2007 45606 816:41
2008 67141 648:15
2009 31202 446:08
2010 51537 645:00
2011 37605 681:30
2012 22905 422:55
2013 31981 613:10
2014 14002 473:05
2015 30142 560:45
2016 29593 427:55
2017 30654 576:05
2018 25838 430:45
2019 15766 455:27
2020 15677 423:22
 
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