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 0 119:45
2002 0 311:15
2003 201 433:15
2004 550 539:15
2005 202 741:30
2006 59 671:30
2007 71 742:30
2008 30 700:00
2009 41 629:45
2010 33 570:15
2011 56 520:15
2012 31 543:15
2013 27 410:30
2014 89 500:15
2015 67 683:45
2016 33 688:45
2017 156 671:00
2018 238 739:00
2019 156 638:15
 
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