Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 1273 63:45
1998 6529 48:00
1999 2976 79:45
2000 1402 114:15
2001 7733 130:55
2002 6991 311:10
2003 5482 434:00
2004 18330 539:15
2005 28643 741:30
2006 11681 671:30
2007 5224 742:30
2008 9110 700:00
2009 6887 629:45
2010 13210 570:15
2011 21352 520:15
2012 12599 543:15
2013 16191 410:30
2014 5475 500:15
2015 4759 683:45
2016 5154 688:45
2017 10351 671:00
2018 8380 739:00
2019 3214 737:00
2020 952 424:25
 
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