Graph

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

Year Totals Observation hours
1983 1 9:15
1984 6 27:20
1985 4 29:00
1986 32 69:40
1987 17 47:00
1988 3 17:30
1989 7 45:00
1990 2 35:30
1991 10 48:28
1992 8 45:00
1993 10 51:30
1994 2 27:30
1995 5 50:00
1996 6 49:15
1997 3 34:50
1998 4 50:00
1999 41 57:20
2000 4 42:30
2001 3 69:35
2002 12 76:40
2003 76 108:30
2004 25 111:45
2005 200 145:21
2006 119 152:17
2007 477 187:59
2008 247 132:42
2009 57 75:32
2010 247 236:16
2011 888 281:19
2012 934 394:00
2013 945 408:08
2014 1288 481:30
2015 604 400:00
2016 411 467:00
2017 1206 490:30
2018 997 442:30
2019 831 431:54
2020 2255 451:00
2021 937 382:00
2022 320 317:58
 
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