Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 1 63:45
1998 1 48:00
1999 0 79:45
2000 1 114:15
2001 8 130:55
2002 0 311:10
2003 11 434:00
2004 4 539:15
2005 58 741:30
2006 5 671:30
2007 10 742:30
2008 55 700:00
2009 15 629:45
2010 6 570:15
2011 11 520:15
2012 38 543:15
2013 23 410:30
2014 33 500:15
2015 14 683:45
2016 11 688:45
2017 101 671:00
2018 25 739:00
2019 7 737:00
2020 34 703:01
 
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