Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1956 0 13:45
1958 0 4:00
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 1 44:15
2005 9 1018:50
2006 18 647:30
2007 9 816:41
2008 0 648:15
2009 3 446:08
2010 1 645:00
2011 18 681:30
2012 1 422:55
2013 0 613:10
2014 0 473:05
2015 7 560:45
2016 8 427:55
2017 2 576:05
2018 7 430:45
2019 0 455:27
2020 2 506:07
2021 1 615:42
 
Partners