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 34 50:00
1987 53 56:35
2001 0 0:00
2002 0 0:00
2003 4 12:30
2004 15 44:15
2005 432 1018:50
2006 911 647:30
2007 1030 816:41
2008 1098 648:15
2009 477 446:08
2010 406 645:00
2011 931 681:30
2012 243 422:55
2013 374 613:10
2014 779 473:05
2015 257 560:45
2016 5412 427:55
2017 102 576:05
2018 186 430:45
2019 231 455:27
2020 1409 423:22
 
Partners