Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1953 921 51:15
1954 2023 64:45
1955 508 81:45
1956 241 80:00
1957 5220 99:45
1958 123 84:00
1959 272 77:00
1960 355 68:45
1961 261 84:30
1962 0 69:30
1963 63 53:30
1964 58 53:15
1965 92 68:30
1966 110 48:45
1967 1 31:00
1968 43 33:15
1969 0 36:15
1970 84 50:30
1971 1 38:15
1972 69 45:45
1973 98 27:15
1974 0 0:00
1975 68 55:15
1976 2218 48:00
1977 230 43:15
1978 68 45:00
1979 359 52:00
1980 667 51:45
1981 216 62:00
1982 348 177:30
1983 0 4:15
1984 466 194:00
1985 170 253:45
1986 198 292:00
1987 214 282:15
1988 17 226:15
1989 257 165:45
1990 58 134:45
1991 151 127:30
1992 49 114:30
1993 39 117:45
1994 53 64:30
1995 13 90:30
1996 133 102:10
1997 106 89:00
1998 34 49:45
1999 200 162:00
2000 106 123:30
2001 11 159:00
2002 5 111:45
2003 26 68:30
2004 131 106:30
2005 32 112:30
2006 0 60:00
2007 3 70:30
2008 0 103:51
2009 4 78:30
2010 6 76:30
2011 37 214:15
2012 9 225:50
2013 9 180:30
2014 10 206:35
2015 1 77:15
2016 6 101:05
2017 6 55:40
2018 7 66:31
2019 0 90:45
 
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