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 3 53:15
1965 0 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 0 55:15
1976 2 48:00
1977 16 43:15
1978 7 45:00
1979 18 52:00
1980 21 51:45
1981 19 62:00
1982 248 177:30
1983 0 4:15
1984 56 194:00
1985 111 253:45
1986 73 292:00
1987 286 282:15
1988 64 226:15
1989 18 165:45
1990 30 134:45
1991 9 127:30
1992 61 114:30
1993 48 117:45
1994 2 64:30
1995 5 90:30
1996 16 102:10
1997 0 89:00
1998 0 49:45
1999 31 162:00
2000 8 123:30
2001 139 159:00
2002 73 92:30
2003 16 68:30
2004 47 106:30
2005 8 112:30
2006 0 60:00
2007 1 70:30
2008 30 103:51
2009 46 78:30
2010 291 76:30
2011 99 214:15
2012 293 225:50
2013 64 180:30
2014 182 206:35
2015 35 77:15
2016 63 101:05
2017 27 55:40
2018 19 66:31
2019 47 90:45
 
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