Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1972 1 31:00
1973 2 18:15
1974 0 7:45
1975 0 18:30
1976 0 66:30
1977 0 23:45
1978 6 116:45
1979 5 71:45
1980 9 109:00
1981 0 78:00
1982 1 39:00
1983 9 71:00
1984 2 30:15
1985 162 98:00
1986 3 41:30
1987 187 42:15
1988 12 55:00
1989 2862 47:15
1990 20 33:00
1991 1 18:00
1992 172 28:30
1993 3 25:45
1994 12 40:00
1995 13 15:15
1996 3 5:00
1997 95 26:30
1998 115 20:00
1999 10 26:45
2000 2 27:30
2001 13 23:00
2002 2 26:55
2003 141 37:45
2004 993 30:10
2005 17 34:00
2006 17 41:33
2007 184 83:14
2008 30 56:33
2009 214 76:07
2010 18 52:50
2011 179 80:30
2012 148 94:05
2013 4 66:27
2014 4 41:10
2015 4 49:05
2016 0 19:00
2017 15 123:39
2018 48 89:34
2019 21 98:07
2020 3 108:43
2021 0 1:30
 
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