Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 41 66:45
1998 121 46:00
1999 50 79:15
2000 28 114:15
2001 164 119:45
2002 157 311:15
2003 282 433:15
2004 1576 539:15
2005 1581 741:30
2006 534 671:30
2007 914 742:30
2008 1680 700:00
2009 664 629:45
2010 817 570:15
2011 1410 520:15
2012 923 543:15
2013 510 410:30
2014 439 500:15
2015 752 683:45
2016 707 688:45
2017 302 671:00
2018 413 739:00
2019 109 437:23
 
Partners