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 1 114:15
2001 1 130:55
2002 2 311:10
2003 2 434:00
2004 14 539:15
2005 7 741:30
2006 10 671:30
2007 27 742:30
2008 9 700:00
2009 12 629:45
2010 26 570:15
2011 21 520:15
2012 25 543:15
2013 28 410:30
2014 37 500:15
2015 36 683:45
2016 26 688:45
2017 41 671:00
2018 28 739:00
2019 38 737:00
2020 41 780:30
 
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