Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 7 66:45
1998 1 46:00
1999 2 79:15
2000 2 114:15
2001 6 119:45
2002 21 311:15
2003 44 433:15
2004 693 539:15
2005 27 741:30
2006 26 671:30
2007 52 742:30
2008 69 700:00
2009 27 629:45
2010 1317 570:15
2011 27 520:15
2012 520 543:15
2013 19 410:30
2014 87 500:15
2015 6 683:45
2016 7 688:45
2017 10 671:00
2018 7 739:00
2019 2824 731:30
 
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