Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 2 66:45
1998 1 46:00
1999 0 79:15
2000 1 114:15
2001 1 119:45
2002 6 311:15
2003 11 433:15
2004 9 539:15
2005 15 741:30
2006 28 671:30
2007 13 742:30
2008 10 700:00
2009 6 629:45
2010 5 570:15
2011 9 520:15
2012 18 543:15
2013 16 410:30
2014 9 500:15
2015 14 683:45
2016 11 688:45
2017 14 671:00
2018 3 739:00
2019 8 721:15
 
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