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 1 29:00
1986 3 69:40
1987 3 47:00
1988 0 17:30
1989 0 45:00
1990 0 35:30
1991 0 48:28
1992 0 45:00
1993 0 51:30
1994 2 27:30
1995 2 50:00
1996 3 49:15
1997 1 34:50
1998 1 50:00
1999 1 57:20
2000 4 42:30
2001 15 69:35
2002 10 76:40
2003 17 108:30
2004 14 111:45
2005 12 145:21
2006 45 152:17
2007 28 187:59
2008 19 132:42
2009 7 75:32
2010 20 236:16
2011 25 281:19
2012 36 394:00
2013 13 408:08
2014 30 481:30
2015 16 400:00
2016 27 467:00
2017 49 490:30
2018 37 442:30
2019 29 431:54
2020 25 451:00
2021 33 382:00
2022 16 317:58
2023 0 162:30
 
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