Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
1997 0 63:45
1998 0 48:00
1999 50 79:45
2000 33 114:15
2001 10 130:55
2002 352 311:10
2003 919 434:00
2004 939 539:15
2005 997 741:30
2006 1473 671:30
2007 315 742:30
2008 757 700:00
2009 105 629:45
2010 3625 570:15
2011 1409 520:15
2012 40 543:15
2013 177 410:30
2014 84 500:15
2015 6 683:45
2016 5 688:45
2017 0 671:00
2018 0 739:00
2019 0 737:00
2020 0 795:00
2021 0 18:30
 
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