Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 2 63:45
1998 3 48:00
1999 3 79:45
2000 0 114:15
2001 2 130:55
2002 6 311:10
2003 6 434:00
2004 7 539:15
2005 8 741:30
2006 8 671:30
2007 2 742:30
2008 2 700:00
2009 2 629:45
2010 5 570:15
2011 3 520:15
2012 7 543:15
2013 3 410:30
2014 1 500:15
2015 1 683:45
2016 3 688:45
2017 3 671:00
2018 9 739:00
2019 2 737:00
2020 3 718:06
 
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