Graph

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

Year Totals Observation hours
1997 0 63:45
1998 17 48:00
1999 5 79:45
2000 16 114:15
2001 28 130:55
2002 37 311:10
2003 51 434:00
2004 141 539:15
2005 322 741:30
2006 84 671:30
2007 112 742:30
2008 179 700:00
2009 138 629:45
2010 179 570:15
2011 94 520:15
2012 100 543:15
2013 149 410:30
2014 263 500:15
2015 623 683:45
2016 119 688:45
2017 340 671:00
2018 240 739:00
2019 106 737:00
2020 269 795:00
2021 459 787:15
2022 223 648:40
2023 20 84:42
 
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