Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1953 0 51:15
1954 18 64:45
1955 36 81:45
1956 11 80:00
1957 0 99:45
1958 0 84:00
1959 0 77:00
1960 15 68:45
1961 0 84:30
1962 0 69:30
1963 0 53:30
1964 6 53:15
1965 5 68:30
1966 0 48:45
1967 0 31:00
1968 11 33:15
1969 0 36:15
1970 0 50:30
1971 0 38:15
1972 0 45:45
1973 1 27:15
1974 0 0:00
1975 1 55:15
1976 76 48:00
1977 51 43:15
1978 0 45:00
1979 0 52:00
1980 0 51:45
1981 0 62:00
1982 45 177:30
1983 0 4:15
1984 37 194:00
1985 179 253:45
1986 110 292:00
1987 0 282:15
1988 57 276:00
1989 575 239:42
1990 8 134:45
1991 24 127:30
1992 2 116:30
1993 26 117:45
1994 63 64:30
1995 36 90:30
1996 16 102:10
1997 112 89:00
1998 0 49:45
1999 114 162:00
2000 147 123:30
2001 213 185:15
2002 101 143:15
2003 90 85:30
2004 203 106:30
2005 204 112:30
2006 256 60:00
2007 100 70:30
2008 211 103:51
2009 324 78:30
2010 105 76:30
2011 5130 214:15
2012 526 225:50
2013 830 180:30
2014 1151 206:35
2015 392 77:15
2016 30 101:05
2017 119 55:40
2018 178 66:31
2019 292 90:45
2020 131 71:49
 
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