Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 189 66:45
1998 37 46:00
1999 38 79:15
2000 64 114:15
2001 70 119:45
2002 192 311:15
2003 302 433:15
2004 804 539:15
2005 676 741:30
2006 540 671:30
2007 391 742:30
2008 961 700:00
2009 444 629:45
2010 515 570:15
2011 487 520:15
2012 505 543:15
2013 317 410:30
2014 939 500:15
2015 1062 683:45
2016 431 688:45
2017 979 671:00
2018 1333 739:00
2019 310 558:30
 
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