Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
1997 883 63:45
1998 240 48:00
1999 798 79:45
2000 411 114:15
2001 282 130:55
2002 682 311:10
2003 2845 434:00
2004 2595 539:15
2005 2123 741:30
2006 1335 671:30
2007 3707 742:30
2008 1523 700:00
2009 4591 629:45
2010 5043 570:15
2011 4971 520:15
2012 3705 543:15
2013 2285 410:30
2014 3001 500:15
2015 1643 683:45
2016 2252 688:45
2017 1609 671:00
2018 2329 739:00
2019 2487 737:00
2020 1573 795:00
2021 507 619:16
 
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