Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1953 0 51:15
1954 0 64:45
1955 0 81:45
1956 0 80:00
1957 1 99:45
1958 3 84:00
1959 0 77:00
1960 2 68:45
1961 5 84:30
1962 0 69:30
1963 4 53:30
1964 0 53:15
1965 6 68:30
1966 1 48:45
1967 0 31:00
1968 0 33:15
1969 0 36:15
1970 0 50:30
1971 0 38:15
1972 25 45:45
1973 0 27:15
1974 0 0:00
1975 0 55:15
1976 32 48:00
1977 10 43:15
1978 0 45:00
1979 10 52:00
1980 1 51:45
1981 30 62:00
1982 38 177:30
1983 0 4:15
1984 70 194:00
1985 90 253:45
1986 24 292:00
1987 3 282:15
1988 32 226:15
1989 13 233:42
1990 34 134:45
1991 49 127:30
1992 7 116:30
1993 15 117:45
1994 8 64:30
1995 18 90:30
1996 7 102:10
1997 7 89:00
1998 10 49:45
1999 11 162:00
2000 13 123:30
2001 16 185:15
2002 2 143:15
2003 8 85:30
2004 9 106:30
2005 7 112:30
2006 37 60:00
2007 4 70:30
2008 6 103:51
2009 0 78:30
2010 3 76:30
2011 91 214:15
2012 71 225:50
2013 318 180:30
2014 31 206:35
2015 7 77:15
2016 14 101:05
2017 8 55:40
2018 0 66:31
2019 26 90:45
2020 71 71:49
 
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