Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 0 63:45
1998 0 48:00
1999 0 79:45
2000 0 114:15
2001 0 130:55
2002 0 311:10
2003 2 434:00
2004 2 539:15
2005 4 741:30
2006 4 671:30
2007 4 742:30
2008 4 700:00
2009 8 629:45
2010 3 570:15
2011 1 520:15
2012 7 543:15
2013 1 410:30
2014 2 500:15
2015 2 683:45
2016 3 688:45
2017 7 671:00
2018 4 739:00
2019 0 737:00
2020 0 703:01
 
Partners