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 6 130:55
2002 3 311:10
2003 2 434:00
2004 2 539:15
2005 9 741:30
2006 15 671:30
2007 11 742:30
2008 5 700:00
2009 5 629:45
2010 2 570:15
2011 2 520:15
2012 2 543:15
2013 1 410:30
2014 2 500:15
2015 6 683:45
2016 6 688:45
2017 3 671:00
2018 9 739:00
2019 22 737:00
2020 5 421:25
 
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