Graph

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

Year Totals Observation hours
1997 2 63:45
1998 10 48:00
1999 10 79:45
2000 3 114:15
2001 8 130:55
2002 35 311:10
2003 52 434:00
2004 78 539:15
2005 82 741:30
2006 53 671:30
2007 34 742:30
2008 41 700:00
2009 47 629:45
2010 60 570:15
2011 39 520:15
2012 39 543:15
2013 43 410:30
2014 36 500:15
2015 28 683:45
2016 69 688:45
2017 55 671:00
2018 30 739:00
2019 36 737:00
2020 18 795:00
2021 25 787:15
2022 12 648:40
2023 4 545:15
 
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