Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 1 66:45
1998 0 46:00
1999 0 79:15
2000 0 114:15
2001 0 119:45
2002 4 311:15
2003 21 433:15
2004 13 539:15
2005 19 741:30
2006 61 671:30
2007 21 742:30
2008 15 700:00
2009 7 629:45
2010 24 570:15
2011 46 520:15
2012 33 543:15
2013 7 410:30
2014 14 500:15
2015 0 683:45
2016 6 688:45
2017 4 671:00
2018 7 739:00
2019 5 451:00
 
Partners