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 1 69:40
1987 6 47:00
1988 0 17:30
1989 4 45:00
1990 26 35:30
1991 30 48:28
1992 10 45:00
1993 52 51:30
1994 0 27:30
1995 28 50:00
1996 24 49:15
1997 12 34:50
1998 78 50:00
1999 108 57:20
2000 40 42:30
2001 119 69:35
2002 112 76:40
2003 81 108:30
2004 262 111:45
2005 195 145:21
2006 613 152:17
2007 579 187:59
2008 660 132:42
2009 125 75:32
2010 936 236:16
2011 772 281:19
2012 3750 394:00
2013 1642 408:08
2014 1413 481:30
2015 1037 400:00
2016 1225 467:00
2017 1493 490:30
2018 2479 442:30
2019 2476 431:54
2020 1445 451:00
2021 1219 382:00
2022 825 317:58
 
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