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 33 114:15
2001 1 119:45
2002 18 311:15
2003 19 433:15
2004 65 539:15
2005 83 741:30
2006 59 671:30
2007 58 742:30
2008 24 700:00
2009 55 629:45
2010 40 570:15
2011 109 520:15
2012 64 543:15
2013 123 410:30
2014 67 500:15
2015 90 683:45
2016 168 688:45
2017 158 671:00
2018 56 739:00
2019 70 721:15
 
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