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 1 77:00
1960 0 68:45
1961 1 84:30
1962 3 69:30
1963 1 53:30
1964 3 53:15
1965 0 68:30
1966 0 48:45
1967 1 31:00
1968 0 33:15
1969 0 36:15
1970 1 50:30
1971 0 38:15
1972 1 45:45
1973 0 27:15
1974 0 0:00
1975 3 55:15
1976 2 48:00
1977 0 43:15
1978 0 45:00
1979 1 52:00
1980 0 51:45
1981 0 62:00
1982 2 177:30
1983 0 4:15
1984 2 194:00
1985 4 253:45
1986 13 292:00
1987 17 282:15
1988 17 226:15
1989 16 165:45
1990 10 134:45
1991 4 127:30
1992 8 114:30
1993 9 117:45
1994 15 64:30
1995 15 90:30
1996 3 102:10
1997 5 89:00
1998 4 49:45
1999 13 162:00
2000 4 123:30
2001 0 159:00
2002 1 111:45
2003 13 68:30
2004 6 106:30
2005 14 112:30
2006 7 60:00
2007 6 70:30
2008 4 103:51
2009 6 78:30
2010 2 76:30
2011 12 214:15
2012 5 225:50
2013 14 180:30
2014 11 206:35
2015 0 77:15
2016 6 101:05
2017 1 55:40
2018 5 66:31
2019 9 90:45
 
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