Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 113 66:45
1998 14 46:00
1999 27 79:15
2000 137 114:15
2001 332 119:45
2002 1732 311:15
2003 500 433:15
2004 843 539:15
2005 741 741:30
2006 552 671:30
2007 1485 742:30
2008 657 700:00
2009 390 629:45
2010 1203 570:15
2011 1635 520:15
2012 977 543:15
2013 1325 410:30
2014 557 500:15
2015 560 683:45
2016 4255 688:45
2017 911 671:00
2018 1500 739:00
2019 6482 653:30
 
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