Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 1 66:45
1998 4 46:00
1999 1 79:15
2000 20 114:15
2001 8 119:45
2002 38 311:15
2003 33 433:15
2004 45 539:15
2005 88 741:30
2006 36 671:30
2007 154 742:30
2008 64 700:00
2009 83 629:45
2010 61 570:15
2011 48 520:15
2012 89 543:15
2013 60 410:30
2014 108 500:15
2015 94 683:45
2016 147 688:45
2017 187 671:00
2018 115 739:00
2019 139 731:30
 
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