Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 0 66:45
1998 83 46:00
1999 3 79:15
2000 39 114:15
2001 9 119:45
2002 166 311:15
2003 42 433:15
2004 716 539:15
2005 427 741:30
2006 162 671:30
2007 1196 742:30
2008 815 700:00
2009 883 629:45
2010 721 570:15
2011 253 520:15
2012 2166 543:15
2013 600 410:30
2014 433 500:15
2015 1329 683:45
2016 1232 688:45
2017 5132 671:00
2018 1409 739:00
2019 2831 558:30
 
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