Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 17 66:45
1998 3 46:00
1999 4 79:15
2000 18 114:15
2001 89 119:45
2002 158 311:15
2003 205 433:15
2004 316 539:15
2005 417 741:30
2006 281 671:30
2007 137 742:30
2008 218 700:00
2009 326 629:45
2010 368 570:15
2011 389 520:15
2012 443 543:15
2013 355 410:30
2014 293 500:15
2015 346 683:45
2016 209 688:45
2017 377 671:00
2018 144 739:00
2019 58 548:00
 
Partners