Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 0 66:45
1998 0 46:00
1999 9 79:15
2000 0 114:15
2001 1 119:45
2002 8 311:15
2003 0 433:15
2004 278 539:15
2005 206 741:30
2006 6 671:30
2007 25 742:30
2008 40 700:00
2009 1 629:45
2010 38 570:15
2011 2 520:15
2012 47 543:15
2013 410 410:30
2014 45 500:15
2015 19 683:45
2016 92 688:45
2017 199 671:00
2018 24 739:00
2019 45 721:15
 
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