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 2 99:45
1958 1 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 1 48:45
1967 1 31:00
1968 0 33:15
1969 0 36:15
1970 1 50:30
1971 0 38:15
1972 0 45:45
1973 0 27:15
1974 0 0:00
1975 2 55:15
1976 0 48:00
1977 0 43:15
1978 0 45:00
1979 1 52:00
1980 0 51:45
1981 1 62:00
1982 0 177:30
1983 0 4:15
1984 2 194:00
1985 0 253:45
1986 1 292:00
1987 0 282:15
1988 3 226:15
1989 0 165:45
1990 0 134:45
1991 8 127:30
1992 0 114:30
1993 5 117:45
1994 1 64:30
1995 0 90:30
1996 0 102:10
1997 0 89:00
1998 0 49:45
1999 1 162:00
2000 1 123:30
2001 10 159:00
2002 1 92:30
2003 0 68:30
2004 2 106:30
2005 4 112:30
2006 0 60:00
2007 3 70:30
2008 0 103:51
2009 0 78:30
2010 13 76:30
2011 7 214:15
2012 31 225:50
2013 19 180:30
2014 23 206:35
2015 28 77:15
2016 6 101:05
2017 1 55:40
2018 27 66:31
2019 42 90:45
 
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