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 1 77:00
1960 0 68:45
1961 0 84:30
1962 0 69:30
1963 0 53:30
1964 0 53:15
1965 1 68:30
1966 9 48:45
1967 9 31:00
1968 4 33:15
1969 0 36:15
1970 0 50:30
1971 0 38:15
1972 16 45:45
1973 0 27:15
1974 0 0:00
1975 0 55:15
1976 0 48:00
1977 1 43:15
1978 0 45:00
1979 0 52:00
1980 0 51:45
1981 1 62:00
1982 1 177:30
1983 0 4:15
1984 3 194:00
1985 7 253:45
1986 42 292:00
1987 160 282:15
1988 186 161:15
1989 101 133:30
1990 213 116:15
1991 69 105:30
1992 108 97:30
1993 201 117:45
1994 96 64:30
1995 132 90:30
1996 113 102:10
1997 38 89:00
1998 22 49:45
1999 97 162:00
2000 107 123:30
2001 184 144:15
2002 18 71:30
2003 18 54:15
2004 93 101:45
2005 68 112:30
2006 34 60:00
2007 52 70:30
2008 107 103:51
2009 41 78:30
2010 19 76:30
2011 50 214:15
2012 37 225:50
2013 38 180:30
2014 51 206:35
2015 28 77:15
2016 45 101:05
2017 21 55:40
2018 13 66:31
2019 6 90:45
 
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