Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1956 0 13:45
1958 1 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 0 44:15
2005 28 1018:50
2006 9 647:30
2007 40 816:41
2008 160 648:15
2009 39 446:08
2010 2 645:00
2011 13 681:30
2012 0 422:55
2013 3 613:10
2014 2 473:05
2015 0 560:45
2016 10 427:55
2017 11 576:05
2018 31 430:45
2019 2 455:27
2020 3 506:07
2021 21 619:12
 
Partners