Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 0 63:45
1998 0 48:00
1999 7 79:45
2000 1 114:15
2001 5 130:55
2002 58 311:10
2003 22 434:00
2004 12 539:15
2005 94 741:30
2006 81 671:30
2007 2765 742:30
2008 154 700:00
2009 36 629:45
2010 180 570:15
2011 42 520:15
2012 113 543:15
2013 196 410:30
2014 83 500:15
2015 28 683:45
2016 116 688:45
2017 16 671:00
2018 9 739:00
2019 75 737:00
2020 148 795:00
2021 0 356:15
 
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