Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 33 63:45
1998 0 48:00
1999 0 79:45
2000 0 114:15
2001 0 130:55
2002 0 311:10
2003 62 434:00
2004 34 539:15
2005 63 741:30
2006 56 671:30
2007 70 742:30
2008 208 700:00
2009 60 629:45
2010 88 570:15
2011 43 520:15
2012 88 543:15
2013 35 410:30
2014 0 500:15
2015 217 683:45
2016 16 688:45
2017 7 671:00
2018 20 739:00
2019 100 737:00
2020 130 771:45
 
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