Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 1 66:45
1998 1 46:00
1999 1 79:15
2000 3 114:15
2001 4 119:45
2002 1 311:15
2003 3 433:15
2004 1 539:15
2005 4 741:30
2006 6 671:30
2007 1 742:30
2008 2 700:00
2009 1 629:45
2010 6 570:15
2011 0 520:15
2012 1 543:15
2013 1 410:30
2014 0 500:15
2015 1 683:45
2016 1 688:45
2017 1 671:00
2018 1 739:00
2019 1 731:30
 
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