Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 0 66:45
1998 0 46:00
1999 1 79:15
2000 2 114:15
2001 0 119:45
2002 9 311:15
2003 8 433:15
2004 4 539:15
2005 10 741:30
2006 4 671:30
2007 8 742:30
2008 11 700:00
2009 22 629:45
2010 27 570:15
2011 22 520:15
2012 14 543:15
2013 9 410:30
2014 6 500:15
2015 16 683:45
2016 5 688:45
2017 8 671:00
2018 31 739:00
2019 21 630:45
 
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