Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 468 63:45
1998 741 48:00
1999 826 79:45
2000 2009 114:15
2001 3047 130:55
2002 2279 311:10
2003 2343 434:00
2004 5469 539:15
2005 11490 741:30
2006 4785 671:30
2007 2925 742:30
2008 5995 700:00
2009 5338 629:45
2010 5393 570:15
2011 7362 520:15
2012 5188 543:15
2013 11755 410:30
2014 11760 500:15
2015 4775 683:45
2016 7747 688:45
2017 3522 671:00
2018 10031 739:00
2019 5207 737:00
2020 4378 795:00
2021 1109 225:45
 
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