Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 26 63:45
1998 10 48:00
1999 7 79:45
2000 59 114:15
2001 338 130:55
2002 337 311:10
2003 1169 434:00
2004 480 539:15
2005 1011 741:30
2006 385 671:30
2007 1245 742:30
2008 1310 700:00
2009 347 629:45
2010 1481 570:15
2011 747 520:15
2012 820 543:15
2013 705 410:30
2014 3347 500:15
2015 400 683:45
2016 1791 688:45
2017 548 671:00
2018 1040 739:00
2019 2757 737:00
2020 806 718:06
 
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