Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 11 66:45
1998 67 46:00
1999 27 79:15
2000 35 114:15
2001 10 119:45
2002 352 311:15
2003 250 433:15
2004 393 539:15
2005 380 741:30
2006 218 671:30
2007 173 742:30
2008 210 700:00
2009 323 629:45
2010 515 570:15
2011 264 520:15
2012 544 543:15
2013 459 410:30
2014 260 500:15
2015 586 683:45
2016 644 688:45
2017 1131 671:00
2018 549 739:00
2019 225 717:00
 
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