Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 5 66:45
1998 1 46:00
1999 5 79:15
2000 1 114:15
2001 0 119:45
2002 16 311:15
2003 12 433:15
2004 28 539:15
2005 85 741:30
2006 40 671:30
2007 11 742:30
2008 67 700:00
2009 9 629:45
2010 47 570:15
2011 12 520:15
2012 19 543:15
2013 7 410:30
2014 3 500:15
2015 33 683:45
2016 30 688:45
2017 14 671:00
2018 64 739:00
2019 28 638:15
 
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