Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 7 66:45
1998 19 46:00
1999 7 79:15
2000 7 114:15
2001 34 119:45
2002 88 311:15
2003 117 433:15
2004 77 539:15
2005 146 741:30
2006 53 671:30
2007 414 742:30
2008 2552 700:00
2009 177 629:45
2010 2126 570:15
2011 204 520:15
2012 1525 543:15
2013 386 410:30
2014 301 500:15
2015 339 683:45
2016 72 688:45
2017 247 671:00
2018 134 739:00
2019 2114 721:15
 
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