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 25 84:30
1962 0 69:30
1963 2 53:30
1964 0 53:15
1965 0 68:30
1966 105 48:45
1967 32 31:00
1968 0 33:15
1969 0 36:15
1970 1 50:30
1971 13 38:15
1972 0 45:45
1973 0 27:15
1974 0 0:00
1975 0 55:15
1976 0 48:00
1977 24 43:15
1978 3 45:00
1979 59 52:00
1980 12 51:45
1981 0 62:00
1982 27 177:30
1983 0 4:15
1984 28 194:00
1985 16 253:45
1986 6 292:00
1987 57 282:15
1988 20 161:15
1989 4 133:30
1990 0 116:15
1991 11 105:30
1992 1 97:30
1993 1 117:45
1994 0 64:30
1995 0 90:30
1996 0 102:10
1997 0 89:00
1998 13 49:45
1999 5 162:00
2000 0 123:30
2001 16 144:15
2002 2 71:30
2003 0 54:15
2004 7 101:45
2005 22 112:30
2006 0 60:00
2007 4 70:30
2008 16 103:51
2009 31 78:30
2010 2 76:30
2011 306 214:15
2012 21 225:50
2013 97 180:30
2014 729 206:35
2015 35 77:15
2016 17 101:05
2017 13 55:40
2018 50 66:31
2019 91 90:45
 
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