Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 1 63:45
1998 2 48:00
1999 6 79:45
2000 8 114:15
2001 12 130:55
2002 31 311:10
2003 53 434:00
2004 66 539:15
2005 111 741:30
2006 46 671:30
2007 55 742:30
2008 116 700:00
2009 110 629:45
2010 62 570:15
2011 50 520:15
2012 91 543:15
2013 91 410:30
2014 128 500:15
2015 37 683:45
2016 74 688:45
2017 92 671:00
2018 139 739:00
2019 87 737:00
2020 44 614:21
 
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