Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 5 63:45
1998 3 48:00
1999 0 79:45
2000 0 114:15
2001 2 130:55
2002 4 311:10
2003 11 434:00
2004 32 539:15
2005 12 741:30
2006 12 671:30
2007 15 742:30
2008 12 700:00
2009 8 629:45
2010 9 570:15
2011 13 520:15
2012 11 543:15
2013 10 410:30
2014 12 500:15
2015 10 683:45
2016 3 688:45
2017 12 671:00
2018 8 739:00
2019 3 737:00
2020 9 703:01
 
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