Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
1997 7 63:45
1998 1 48:00
1999 2 79:45
2000 13 114:15
2001 3 130:55
2002 69 311:10
2003 54 434:00
2004 66 539:15
2005 109 741:30
2006 83 671:30
2007 117 742:30
2008 116 700:00
2009 111 629:45
2010 130 570:15
2011 188 520:15
2012 98 543:15
2013 107 410:30
2014 66 500:15
2015 139 683:45
2016 84 688:45
2017 148 671:00
2018 147 739:00
2019 273 737:00
2020 306 795:00
2021 183 614:31
 
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