Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 8 66:45
1998 25 46:00
1999 8 79:15
2000 38 114:15
2001 15 119:45
2002 48 311:15
2003 238 433:15
2004 770 539:15
2005 961 741:30
2006 574 671:30
2007 2900 742:30
2008 923 700:00
2009 1224 629:45
2010 1416 570:15
2011 818 520:15
2012 1820 543:15
2013 1317 410:30
2014 1499 500:15
2015 2783 683:45
2016 2941 688:45
2017 2129 671:00
2018 2368 739:00
2019 2314 653:30
 
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