Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 30 66:45
1998 3 46:00
1999 22 79:15
2000 1 114:15
2001 21 119:45
2002 25 311:15
2003 51 433:15
2004 87 539:15
2005 51 741:30
2006 48 671:30
2007 37 742:30
2008 46 700:00
2009 45 629:45
2010 67 570:15
2011 49 520:15
2012 77 543:15
2013 51 410:30
2014 54 500:15
2015 65 683:45
2016 98 688:45
2017 50 671:00
2018 48 739:00
2019 63 721:15
 
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