Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 1 63:45
1998 3 48:00
1999 0 79:45
2000 1 114:15
2001 1 130:55
2002 9 311:10
2003 10 434:00
2004 20 539:15
2005 22 741:30
2006 49 671:30
2007 27 742:30
2008 27 700:00
2009 20 629:45
2010 16 570:15
2011 26 520:15
2012 20 543:15
2013 21 410:30
2014 22 500:15
2015 27 683:45
2016 30 688:45
2017 17 671:00
2018 44 739:00
2019 33 737:00
2020 51 795:00
2021 0 19:15
 
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