Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 1 66:45
1998 0 46:00
1999 0 79:15
2000 1 114:15
2001 0 119:45
2002 4 311:15
2003 12 433:15
2004 57 539:15
2005 23 741:30
2006 11 671:30
2007 41 742:30
2008 47 700:00
2009 50 629:45
2010 44 570:15
2011 107 520:15
2012 79 543:15
2013 65 410:30
2014 102 500:15
2015 100 683:45
2016 159 688:45
2017 164 671:00
2018 153 739:00
2019 160 450:00
 
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