Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 0 66:45
1998 2 46:00
1999 0 79:15
2000 40 114:15
2001 6 119:45
2002 102 311:15
2003 107 433:15
2004 76 539:15
2005 25 741:30
2006 20 671:30
2007 145 742:30
2008 20 700:00
2009 80 629:45
2010 5 570:15
2011 57 520:15
2012 34 543:15
2013 99 410:30
2014 32 500:15
2015 111 683:45
2016 65 688:45
2017 179 671:00
2018 62 739:00
2019 129 548:00
 
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