Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
1997 1427 66:45
1998 10270 46:00
1999 1018 79:15
2000 2186 114:15
2001 15784 119:45
2002 9845 311:15
2003 18737 433:15
2004 16435 539:15
2005 27506 741:30
2006 52377 671:30
2007 14114 742:30
2008 53209 700:00
2009 21415 629:45
2010 52545 570:15
2011 42665 520:15
2012 32034 543:15
2013 55262 410:30
2014 83095 500:15
2015 16966 683:45
2016 31172 688:45
2017 71576 671:00
2018 50116 739:00
2019 955 548:00
 
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