Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1956 40 13:45
1958 2 4:00
1977 351 29:30
1978 2570 27:30
1982 0 3:00
1986 2 50:00
1987 53 56:35
2001 0 0:00
2002 0 0:00
2003 0 12:30
2004 12458 44:15
2005 19171 1018:50
2006 12775 647:30
2007 4053 816:41
2008 933 648:15
2009 271 446:08
2010 861 645:00
2011 81 681:30
2012 27 422:55
2013 141 613:10
2014 3641 473:05
2015 1203 560:45
2016 1194 427:55
2017 13149 576:05
2018 4436 430:45
2019 1030 455:27
2020 87 423:22
 
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