Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1956 0 13:45
1958 5 4:00
1977 0 29:30
1978 1 27:30
1982 0 3:00
1986 1 50:00
1987 0 56:35
2001 0 0:00
2002 0 0:00
2003 29 12:30
2004 21 44:15
2005 2412 1018:50
2006 652 647:30
2007 2214 816:41
2008 714 648:15
2009 521 446:08
2010 1967 645:00
2011 489 681:30
2012 250 422:55
2013 409 613:10
2014 362 473:05
2015 1237 560:45
2016 726 427:55
2017 1111 576:05
2018 626 430:45
2019 1232 455:27
2020 352 423:22
 
Partners