Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
1997 2 63:45
1998 7 48:00
1999 0 79:45
2000 4 114:15
2001 17 130:55
2002 61 311:10
2003 107 434:00
2004 118 539:15
2005 177 741:30
2006 74 671:30
2007 114 742:30
2008 132 700:00
2009 74 629:45
2010 132 570:15
2011 138 520:15
2012 198 543:15
2013 141 410:30
2014 104 500:15
2015 283 683:45
2016 370 688:45
2017 339 671:00
2018 492 739:00
2019 656 737:00
2020 899 795:00
2021 845 701:01
 
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