Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 19 66:45
1998 3 46:00
1999 0 79:15
2000 4 114:15
2001 27 119:45
2002 40 311:15
2003 38 433:15
2004 89 539:15
2005 175 741:30
2006 59 671:30
2007 174 742:30
2008 191 700:00
2009 120 629:45
2010 209 570:15
2011 159 520:15
2012 123 543:15
2013 39 410:30
2014 172 500:15
2015 104 683:45
2016 71 688:45
2017 89 671:00
2018 103 739:00
2019 3 451:00
 
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