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 1 311:10
2003 2 434:00
2004 8 539:15
2005 5 741:30
2006 2 671:30
2007 2 742:30
2008 9 700:00
2009 2 629:45
2010 13 570:15
2011 5 520:15
2012 6 543:15
2013 22 410:30
2014 18 500:15
2015 11 683:45
2016 14 688:45
2017 6 671:00
2018 13 739:00
2019 14 737:00
2020 19 795:00
2021 12 787:15
2022 7 648:40
2023 8 301:27
 
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