Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 0 66:45
1998 0 46:00
1999 0 79:15
2000 0 114:15
2001 2 119:45
2002 2 311:15
2003 22 433:15
2004 20 539:15
2005 54 741:30
2006 46 671:30
2007 111 742:30
2008 120 700:00
2009 115 629:45
2010 152 570:15
2011 175 520:15
2012 151 543:15
2013 106 410:30
2014 233 500:15
2015 137 683:45
2016 165 688:45
2017 270 671:00
2018 313 739:00
2019 327 721:15
 
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