Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 10 66:45
1998 8 46:00
1999 30 79:15
2000 1 114:15
2001 4 119:45
2002 53 311:15
2003 60 433:15
2004 87 539:15
2005 135 741:30
2006 73 671:30
2007 70 742:30
2008 181 700:00
2009 81 629:45
2010 79 570:15
2011 116 520:15
2012 225 543:15
2013 63 410:30
2014 87 500:15
2015 65 683:45
2016 117 688:45
2017 51 671:00
2018 127 739:00
2019 128 451:00
 
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