Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 7 66:45
1998 5 46:00
1999 7 79:15
2000 6 114:15
2001 7 119:45
2002 19 311:15
2003 68 433:15
2004 57 539:15
2005 47 741:30
2006 39 671:30
2007 44 742:30
2008 25 700:00
2009 24 629:45
2010 49 570:15
2011 54 520:15
2012 106 543:15
2013 62 410:30
2014 57 500:15
2015 92 683:45
2016 61 688:45
2017 106 671:00
2018 91 739:00
2019 41 653:30
 
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