Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1956 0 13:45
1977 0 29:30
1978 0 27:30
1982 0 3:00
1986 0 50:00
1987 0 56:35
2001 0 0:00
2002 0 0:00
2003 0 12:30
2004 0 44:15
2005 39 1018:50
2006 43 647:30
2007 26 816:41
2008 135 648:15
2009 78 446:08
2010 198 645:00
2011 134 681:30
2012 96 422:55
2013 85 613:10
2014 80 473:05
2015 108 560:45
2016 115 427:55
2017 60 576:05
2018 36 430:45
2019 21 455:27
2020 8 397:09
 
Partners