Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1956 561 13:45
1977 341 29:30
1978 25 27:30
1982 974 3:00
1986 8 50:00
1987 61 56:35
2001 0 0:00
2002 0 0:00
2003 0 12:30
2004 4 44:15
2005 590 1018:50
2006 220 647:30
2007 213 816:41
2008 275 648:15
2009 110 446:08
2010 295 645:00
2011 332 681:30
2012 92 422:55
2013 157 613:10
2014 89 473:05
2015 50 560:45
2016 68 427:55
2017 303 576:05
2018 123 430:45
2019 168 455:27
2020 9 397:09
 
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