Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 0 63:45
1998 0 48:00
1999 0 79:45
2000 0 114:15
2001 1 130:55
2002 0 311:10
2003 2 434:00
2004 2 539:15
2005 3 741:30
2006 0 671:30
2007 3 742:30
2008 13 700:00
2009 0 629:45
2010 7 570:15
2011 1 520:15
2012 0 543:15
2013 1 410:30
2014 3 500:15
2015 24 683:45
2016 19 688:45
2017 1 671:00
2018 5 739:00
2019 34 737:00
2020 14 771:45
 
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