Graph

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

Year Totals Observation hours
1983 9 9:15
1984 15 27:20
1985 628 29:00
1986 136 69:40
1987 81 47:00
1988 2 17:30
1989 89 45:00
1990 97 35:30
1991 241 48:28
1992 35 45:00
1993 155 51:30
1994 99 27:30
1995 132 50:00
1996 160 49:15
1997 121 34:50
1998 77 50:00
1999 120 57:20
2000 382 42:30
2001 641 69:35
2002 483 76:40
2003 285 108:30
2004 304 111:45
2005 464 145:21
2006 2069 152:17
2007 976 187:59
2008 599 132:42
2009 360 75:32
2010 1821 236:16
2011 1720 281:19
2012 1989 394:00
2013 1147 408:08
2014 7794 481:30
2015 1538 400:00
2016 2319 467:00
2017 3810 490:30
2018 4401 442:30
2019 23025 431:54
2020 3362 451:00
2021 3681 382:00
2022 9257 317:58
 
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