Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 193 66:45
1998 370 46:00
1999 1461 79:15
2000 2724 114:15
2001 2437 119:45
2002 8061 311:15
2003 14886 433:15
2004 20800 539:15
2005 42287 741:30
2006 26572 671:30
2007 20276 742:30
2008 13807 700:00
2009 20724 629:45
2010 59977 570:15
2011 36878 520:15
2012 30823 543:15
2013 22499 410:30
2014 12980 500:15
2015 19726 683:45
2016 29891 688:45
2017 29517 671:00
2018 26442 739:00
2019 14875 642:45
 
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