Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 0 66:45
1998 0 46:00
1999 0 79:15
2000 0 114:15
2001 0 119:45
2002 0 311:15
2003 0 433:15
2004 0 539:15
2005 1 741:30
2006 1 671:30
2007 20 742:30
2008 4 700:00
2009 0 629:45
2010 12 570:15
2011 5 520:15
2012 8 543:15
2013 2 410:30
2014 10 500:15
2015 19 683:45
2016 4 688:45
2017 2 671:00
2018 0 739:00
2019 4 721:15
 
Partners