Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1956 0 13:45
1958 0 4:00
1977 13 29:30
1978 3 27:30
1982 0 3:00
1986 0 50:00
1987 25 56:35
2001 0 0:00
2002 0 0:00
2003 0 12:30
2004 76 44:15
2005 4016 1018:50
2006 1041 647:30
2007 1257 816:41
2008 176 648:15
2009 136 446:08
2010 145 645:00
2011 114 681:30
2012 94 422:55
2013 165 613:10
2014 78 473:05
2015 236 560:45
2016 198 427:55
2017 105 576:05
2018 66 430:45
2019 217 455:27
2020 117 423:22
 
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