Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 1 63:45
1998 0 48:00
1999 0 79:45
2000 0 114:15
2001 1 130:55
2002 2 311:10
2003 4 434:00
2004 41 539:15
2005 22 741:30
2006 7 671:30
2007 50 742:30
2008 11 700:00
2009 28 629:45
2010 10 570:15
2011 24 520:15
2012 25 543:15
2013 4 410:30
2014 11 500:15
2015 1 683:45
2016 38 688:45
2017 26 671:00
2018 33 739:00
2019 38 737:00
2020 11 718:06
 
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