Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 14 66:45
1998 0 46:00
1999 26 79:15
2000 0 114:15
2001 0 119:45
2002 0 311:15
2003 28 433:15
2004 10 539:15
2005 24 741:30
2006 15 671:30
2007 0 742:30
2008 0 700:00
2009 21 629:45
2010 66 570:15
2011 31 520:15
2012 127 543:15
2013 30 410:30
2014 28 500:15
2015 256 683:45
2016 204 688:45
2017 399 671:00
2018 257 739:00
2019 1165 717:00
 
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