Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 1 66:45
1998 3 46:00
1999 8 79:15
2000 8 114:15
2001 4 119:45
2002 9 311:15
2003 9 433:15
2004 13 539:15
2005 36 741:30
2006 27 671:30
2007 18 742:30
2008 28 700:00
2009 27 629:45
2010 21 570:15
2011 15 520:15
2012 27 543:15
2013 8 410:30
2014 14 500:15
2015 21 683:45
2016 26 688:45
2017 25 671:00
2018 9 739:00
2019 17 630:45
 
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