Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 11 66:45
1998 4 46:00
1999 4 79:15
2000 11 114:15
2001 46 119:45
2002 41 311:15
2003 69 433:15
2004 106 539:15
2005 127 741:30
2006 85 671:30
2007 102 742:30
2008 140 700:00
2009 101 629:45
2010 49 570:15
2011 97 520:15
2012 95 543:15
2013 62 410:30
2014 107 500:15
2015 98 683:45
2016 164 688:45
2017 116 671:00
2018 114 739:00
2019 11 539:30
 
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