Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 0 66:45
1998 0 46:00
1999 0 79:15
2000 46 114:15
2001 0 119:45
2002 37 311:15
2003 29 433:15
2004 122 539:15
2005 49 741:30
2006 12 671:30
2007 10 742:30
2008 15 700:00
2009 84 629:45
2010 11 570:15
2011 34 520:15
2012 48 543:15
2013 56 410:30
2014 34 500:15
2015 32 683:45
2016 8 688:45
2017 10 671:00
2018 11 739:00
2019 11 717:00
 
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