Graph

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

Year Totals Observation hours
1983 0 9:15
1984 0 27:20
1985 0 29:00
1986 0 69:40
1987 22 47:00
1988 0 17:30
1989 87 45:00
1990 22 35:30
1991 0 48:28
1992 123 45:00
1993 0 51:30
1994 0 27:30
1995 11 50:00
1996 105 49:15
1997 0 34:50
1998 167 50:00
1999 54 57:20
2000 25 42:30
2001 226 69:35
2002 283 76:40
2003 131 108:30
2004 863 111:45
2005 3348 145:21
2006 1672 152:17
2007 2001 187:59
2008 706 132:42
2009 514 75:32
2010 8337 236:16
2011 13465 281:19
2012 11477 394:00
2013 21246 408:08
2014 18091 481:30
2015 24228 400:00
2016 12955 467:00
2017 13342 490:30
2018 12221 442:30
2019 8775 431:54
2020 24953 451:00
2021 7796 382:00
2022 11124 317:58
 
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