Graph

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

Year Totals Observation hours
1997 8 39:30
1999 2 19:00
2001 123 594:30
2002 0 0:00
2005 0 77:15
2006 0 32:05
2007 0 88:45
2008 44 100:00
2009 0 52:20
2010 0 48:05
2011 2 88:24
2012 2 36:20
2013 7 37:30
2014 3 30:40
2015 3 44:40
2016 19 163:00
2017 18 179:29
2018 35 380:50
2019 26 344:15
2020 29 447:51
2021 15 462:39
2022 17 482:00
 
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