Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites
Don't use roostmigration

Year Totals Observation hours
1997 0 63:45
1998 0 48:00
1999 0 79:45
2000 0 114:15
2001 0 130:55
2002 3 311:10
2003 3 434:00
2004 2 539:15
2005 3 741:30
2006 7 671:30
2007 7 742:30
2008 3 700:00
2009 3 629:45
2010 1 570:15
2011 2 520:15
2012 4 543:15
2013 3 410:30
2014 2 500:15
2015 4 683:45
2016 3 688:45
2017 2 671:00
2018 3 739:00
2019 2 737:00
2020 3 795:00
2021 2 787:15
2022 1 648:40
2023 0 88:17
 
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