Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 0 66:45
1998 3 46:00
1999 0 79:15
2000 1 114:15
2001 3 119:45
2002 11 311:15
2003 62 433:15
2004 27 539:15
2005 17 741:30
2006 6 671:30
2007 7 742:30
2008 5 700:00
2009 10 629:45
2010 46 570:15
2011 11 520:15
2012 108 543:15
2013 28 410:30
2014 10 500:15
2015 28 683:45
2016 13 688:45
2017 22 671:00
2018 53 739:00
2019 8 630:45
 
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