Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 1 63:45
1998 0 48:00
1999 0 79:45
2000 8 114:15
2001 0 130:55
2002 3 311:10
2003 10 434:00
2004 13 539:15
2005 13 741:30
2006 13 671:30
2007 20 742:30
2008 5 700:00
2009 17 629:45
2010 3 570:15
2011 3 520:15
2012 2 543:15
2013 3 410:30
2014 1 500:15
2015 4 683:45
2016 1 688:45
2017 7 671:00
2018 4 739:00
2019 9 737:00
2020 34 795:00
2021 0 202:45
 
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