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 0 311:10
2003 0 434:00
2004 0 539:15
2005 0 741:30
2006 0 671:30
2007 0 742:30
2008 0 700:00
2009 0 629:45
2010 0 570:15
2011 1 520:15
2012 2 543:15
2013 0 410:30
2014 1 500:15
2015 2 683:45
2016 0 688:45
2017 0 671:00
2018 0 739:00
2019 1 737:00
2020 0 795:00
2021 1 787:15
2022 1 648:40
2023 2 318:37
 
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