Graph

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

Year Totals Observation hours
1983 14 9:15
1984 7 27:20
1985 0 29:00
1986 15 69:40
1987 30 47:00
1988 0 17:30
1989 37 45:00
1990 529 35:30
1991 2 48:28
1992 0 45:00
1993 462 51:30
1994 22 27:30
1995 0 50:00
1996 157 49:15
1997 117 34:50
1998 1 50:00
1999 102 57:20
2000 8 42:30
2001 38 69:35
2002 745 76:40
2003 10 108:30
2004 1028 111:45
2005 490 145:21
2006 165 152:17
2007 498 187:59
2008 167 132:42
2009 71 75:32
2010 352 236:16
2011 25 281:19
2012 156 394:00
2013 2419 408:08
2014 422 481:30
2015 543 400:00
2016 1125 467:00
2017 1311 490:30
2018 197 442:30
2019 606 431:54
2020 242 451:00
2021 772 382:00
2022 248 317:58
2023 292 162:30
 
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