Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1983 34 9:15
1984 27 27:20
1985 31 29:00
1986 74 69:40
1987 70 47:00
1988 20 17:30
1989 46 45:00
1990 102 35:00
1991 52 48:28
1992 20 45:00
1993 19 51:30
1994 99 27:30
1995 99 50:00
1996 166 49:15
1997 66 34:50
1998 29 50:00
1999 54 57:20
2000 84 42:30
2001 148 69:35
2002 36 76:40
2003 73 108:30
2004 113 111:45
2005 166 145:21
2006 233 152:17
2007 139 187:59
2008 64 132:42
2009 28 75:32
2010 156 236:16
2011 68 281:19
2012 262 394:00
2013 183 408:08
2014 100 481:30
2015 26 400:00
2016 53 467:00
2017 28 490:30
2018 28 442:30
2019 113 431:54
2020 120 451:00
2021 29 32:00
 
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