Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 0 63:45
1998 0 48:00
1999 0 79:45
2000 3 114:15
2001 0 130:55
2002 1 311:10
2003 9 434:00
2004 14 539:15
2005 32 741:30
2006 47 671:30
2007 25 742:30
2008 14 700:00
2009 10 629:45
2010 22 570:15
2011 19 520:15
2012 33 543:15
2013 62 410:30
2014 11 500:15
2015 40 683:45
2016 15 688:45
2017 49 671:00
2018 51 739:00
2019 30 737:00
2020 41 718:06
 
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