Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 14 66:45
1998 14 46:00
1999 27 79:15
2000 2 114:15
2001 2 119:45
2002 194 311:15
2003 55 433:15
2004 68 539:15
2005 264 741:30
2006 316 671:30
2007 301 742:30
2008 384 700:00
2009 670 629:45
2010 445 570:15
2011 610 520:15
2012 638 543:15
2013 403 410:30
2014 484 500:15
2015 552 683:45
2016 1004 688:45
2017 458 671:00
2018 919 739:00
2019 460 437:23
 
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