Graph

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

Year Totals Observation hours
1997 1 63:45
1998 5 48:00
1999 6 79:45
2000 105 114:15
2001 64 130:55
2002 302 311:10
2003 310 434:00
2004 737 539:15
2005 2111 741:30
2006 223 671:30
2007 434 742:30
2008 1055 700:00
2009 864 629:45
2010 713 570:15
2011 1238 520:15
2012 1317 543:15
2013 1039 410:30
2014 324 500:15
2015 711 683:45
2016 1703 688:45
2017 732 671:00
2018 469 739:00
2019 440 737:00
2020 935 795:00
2021 847 787:15
2022 247 648:40
2023 990 325:07
 
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