Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
1997 715 63:45
1998 1349 48:00
1999 791 79:45
2000 2768 114:15
2001 8206 130:55
2002 2994 311:10
2003 7481 434:00
2004 3655 539:15
2005 19727 741:30
2006 28021 671:30
2007 20519 742:30
2008 26299 700:00
2009 5799 629:45
2010 7923 570:15
2011 8055 520:15
2012 9504 543:15
2013 8260 410:30
2014 26718 500:15
2015 6698 683:45
2016 3145 688:45
2017 9347 671:00
2018 16959 739:00
2019 38677 737:00
2020 55804 795:00
2021 567 464:50
 
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