Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 36 66:45
1998 53 46:00
1999 11 79:15
2000 22 114:15
2001 62 119:45
2002 35 311:15
2003 109 433:15
2004 129 539:15
2005 317 741:30
2006 62 671:30
2007 73 742:30
2008 66 700:00
2009 133 629:45
2010 117 570:15
2011 156 520:15
2012 103 543:15
2013 108 410:30
2014 169 500:15
2015 63 683:45
2016 120 688:45
2017 86 671:00
2018 50 739:00
2019 77 659:45
 
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