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 1 33:15
1969 0 36:15
1970 0 50:30
1971 0 38:15
1972 0 45:45
1973 0 27:15
1974 0 0:00
1975 1 55:15
1976 1 48:00
1977 1 43:15
1978 0 45:00
1979 1 52:00
1980 0 51:45
1981 0 62:00
1982 0 177:30
1983 0 4:15
1984 6 194:00
1985 28 253:45
1986 106 292:00
1987 149 282:15
1988 57 161:15
1989 83 133:30
1990 69 116:15
1991 52 105:30
1992 49 97:30
1993 240 117:45
1994 22 64:30
1995 24 90:30
1996 18 102:10
1997 7 89:00
1998 5 49:45
1999 13 162:00
2000 56 123:30
2001 15 144:15
2002 5 71:30
2003 5 54:15
2004 21 101:45
2005 23 112:30
2006 5 60:00
2007 8 70:30
2008 10 103:51
2009 9 78:30
2010 42 76:30
2011 38 214:15
2012 7 225:50
2013 17 180:30
2014 22 206:35
2015 11 77:15
2016 14 101:05
2017 0 55:40
2018 4 66:31
2019 24 90:45
 
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