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 0 50:30
1971 0 38:15
1972 0 45:45
1973 0 27:15
1974 0 0:00
1975 0 55:15
1976 0 48:00
1977 0 43:15
1978 0 45:00
1979 0 52:00
1980 0 51:45
1981 0 62:00
1982 5 177:30
1983 0 4:15
1984 4 194:00
1985 6 253:45
1986 1 292:00
1987 5 282:15
1988 7 176:15
1989 12 133:30
1990 0 116:15
1991 5 105:30
1992 25 104:15
1993 3 117:45
1994 6 64:30
1995 3 90:30
1996 6 102:10
1997 15 89:00
1998 0 49:45
1999 6 162:00
2000 7 123:30
2001 4 144:15
2002 3 71:30
2003 1 54:15
2004 3 101:45
2005 1 112:30
2006 0 60:00
2007 3 70:30
2008 0 103:51
2009 5 78:30
2010 0 76:30
2011 4 214:15
2012 4 225:50
2013 1 180:30
2014 2 206:35
2015 1 77:15
2016 3 101:05
2017 0 55:40
2018 0 66:31
2019 2 90:45
 
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