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 0 99:45
1958 0 84:00
1959 0 77:00
1960 2 68:45
1961 0 84:30
1962 0 69:30
1963 0 53:30
1964 0 53:15
1965 1 68:30
1966 0 48:45
1967 0 31:00
1968 0 33:15
1969 0 36:15
1970 0 50:30
1971 0 38:15
1972 0 45:45
1973 0 27:15
1974 0 0:00
1975 1 55:15
1976 1 48:00
1977 7 43:15
1978 0 45:00
1979 24 52:00
1980 10 51:45
1981 2 62:00
1982 53 177:30
1983 0 4:15
1984 77 194:00
1985 114 253:45
1986 31 292:00
1987 83 282:15
1988 1 161:15
1989 9 133:30
1990 0 116:15
1991 2 105:30
1992 3 97:30
1993 0 117:45
1994 7 64:30
1995 4 90:30
1996 13 102:10
1997 29 89:00
1998 0 49:45
1999 0 162:00
2000 13 123:30
2001 0 144:15
2002 0 71:30
2003 0 54:15
2004 0 101:45
2005 5 112:30
2006 0 60:00
2007 2 70:30
2008 3 103:51
2009 2 78:30
2010 42 76:30
2011 51 214:15
2012 28 225:50
2013 25 180:30
2014 3 206:35
2015 3 77:15
2016 3 101:05
2017 4 55:40
2018 0 66:31
2019 6 90:45
 
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