Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 6 63:45
1998 0 48:00
1999 1 79:15
2000 1 114:15
2001 9 118:55
2002 0 311:15
2003 7 433:15
2004 13 539:15
2005 40 741:30
2006 19 671:30
2007 17 742:30
2008 41 700:00
2009 23 629:45
2010 60 570:15
2011 21 520:15
2012 60 543:15
2013 25 410:30
2014 36 500:15
2015 54 683:45
2016 15 688:45
2017 29 671:00
2018 36 739:00
2019 43 737:00
2020 11 349:20
 
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