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 5 77:00
1960 15 68:45
1961 0 84:30
1962 0 69:30
1963 1 53:30
1964 0 53:15
1965 26 68:30
1966 2 48:45
1967 0 31:00
1968 0 33:15
1969 0 36:15
1970 0 50:30
1971 16 38:15
1972 33 45:45
1973 18 27:15
1974 0 0:00
1975 0 55:15
1976 6 48:00
1977 0 43:15
1978 0 45:00
1979 0 52:00
1980 18 51:45
1981 43 62:00
1982 70 177:30
1983 0 4:15
1984 330 194:00
1985 73 253:45
1986 98 292:00
1987 42 282:15
1988 424 246:00
1989 374 239:42
1990 17 134:45
1991 82 127:30
1992 16 116:30
1993 63 117:45
1994 7 64:30
1995 2 90:30
1996 22 102:10
1997 2 89:00
1998 0 49:45
1999 126 162:00
2000 47 123:30
2001 30 185:15
2002 50 143:15
2003 43 85:30
2004 35 106:30
2005 41 112:30
2006 3 60:00
2007 28 70:30
2008 74 103:51
2009 6 78:30
2010 14 76:30
2011 117 214:15
2012 317 225:50
2013 1065 180:30
2014 215 206:35
2015 18 77:15
2016 116 101:05
2017 0 55:40
2018 37 66:31
2019 40 90:45
2020 48 71:49
 
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