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 0 53:15
1965 0 68:30
1966 0 48:45
1967 0 31:00
1968 0 33:15
1969 0 36:15
1970 30 50:30
1971 9 38:15
1972 0 45:45
1973 0 27:15
1974 0 0:00
1975 0 55:15
1976 90 48:00
1977 7 43:15
1978 6 45:00
1979 1 52:00
1980 63 51:45
1981 308 62:00
1982 720 177:30
1983 19 4:15
1984 1581 194:00
1985 557 253:45
1986 54 292:00
1987 18 287:15
1988 480 376:10
1989 103 239:42
1990 17 134:45
1991 65 128:00
1992 10 116:30
1993 16 117:45
1994 0 67:00
1995 10 90:30
1996 25 102:10
1997 29 89:00
1998 0 49:45
1999 66 162:00
2000 42 123:30
2001 22 185:15
2002 22 143:15
2003 0 85:30
2004 95 106:30
2005 1 112:30
2006 5 60:00
2007 292 70:30
2008 1 103:51
2009 126 78:30
2010 1 76:30
2011 37 214:15
2012 1183 225:50
2013 162 180:30
2014 153 206:35
2015 0 77:15
2016 215 101:05
2017 12 55:40
2018 101 66:31
2019 14 90:45
2020 180 112:41
 
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