Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 1347 63:45
1998 11188 48:00
1999 1507 79:45
2000 4619 114:15
2001 10980 130:55
2002 9534 311:10
2003 21574 434:00
2004 22353 539:15
2005 36485 741:30
2006 37072 671:30
2007 28558 742:30
2008 23036 700:00
2009 46736 629:45
2010 16956 570:15
2011 72418 520:15
2012 44475 543:15
2013 39365 410:30
2014 156236 500:15
2015 36000 683:45
2016 29658 688:45
2017 55569 671:00
2018 68542 739:00
2019 57751 737:00
2020 32582 718:06
 
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