Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 0 66:45
1998 0 46:00
1999 3 79:15
2000 1 114:15
2001 5 119:45
2002 11 311:15
2003 45 433:15
2004 46 539:15
2005 86 741:30
2006 108 671:30
2007 90 742:30
2008 74 700:00
2009 77 629:45
2010 60 570:15
2011 66 520:15
2012 105 543:15
2013 40 410:30
2014 72 500:15
2015 103 683:45
2016 68 688:45
2017 107 671:00
2018 132 739:00
2019 178 731:30
 
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