Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
1997 843 63:45
1998 643 48:00
1999 311 79:45
2000 491 114:15
2001 3747 130:55
2002 1494 311:10
2003 5385 434:00
2004 5532 539:15
2005 5004 741:30
2006 4799 671:30
2007 4558 742:30
2008 4963 700:00
2009 3583 629:45
2010 9327 570:15
2011 4122 520:15
2012 4873 543:15
2013 9782 410:30
2014 5884 500:15
2015 3598 683:45
2016 3141 688:45
2017 4907 671:00
2018 3756 739:00
2019 5384 737:00
2020 4810 795:00
2021 1013 459:50
 
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