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 0 68:45
1961 0 84:30
1962 0 69:30
1963 0 53:30
1964 0 53:15
1965 0 68:30
1966 0 48:45
1967 1 31:00
1968 1 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 0 55:15
1976 0 48:00
1977 0 43:15
1978 0 45:00
1979 0 52:00
1980 0 51:45
1981 2 62:00
1982 0 177:30
1983 0 4:15
1984 0 194:00
1985 0 253:45
1986 0 292:00
1987 0 282:15
1988 2 286:00
1989 1 239:42
1990 6 134:45
1991 2 127:30
1992 2 116:30
1993 6 117:45
1994 10 64:30
1995 11 90:30
1996 2 102:10
1997 1 89:00
1998 1 49:45
1999 2 162:00
2000 3 123:30
2001 3 185:15
2002 1 143:15
2003 1 85:30
2004 1 106:30
2005 4 112:30
2006 3 60:00
2007 3 70:30
2008 1 103:51
2009 4 78:30
2010 1 76:30
2011 4 214:15
2012 4 225:50
2013 10 180:30
2014 14 206:35
2015 2 77:15
2016 3 101:05
2017 2 55:40
2018 4 66:31
2019 4 90:45
2020 0 75:19
 
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