Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1953 3 51:15
1954 6 64:45
1955 1 81:45
1956 4 80:00
1957 2 99:45
1958 2 84:00
1959 3 77:00
1960 2 68:45
1961 4 84:30
1962 4 69:30
1963 0 53:30
1964 1 53:15
1965 4 68:30
1966 1 48:45
1967 2 31:00
1968 1 33:15
1969 1 36:15
1970 5 50:30
1971 2 38:15
1972 2 45:45
1973 1 27:15
1974 0 0:00
1975 14 55:15
1976 3 48:00
1977 1 43:15
1978 0 45:00
1979 6 52:00
1980 8 51:45
1981 46 62:00
1982 76 177:30
1983 0 4:15
1984 22 194:00
1985 148 253:45
1986 124 292:00
1987 166 282:15
1988 252 161:15
1989 43 133:30
1990 98 116:15
1991 23 105:30
1992 33 97:30
1993 17 117:45
1994 12 64:30
1995 13 90:30
1996 16 102:10
1997 25 89:00
1998 4 49:45
1999 43 162:00
2000 31 123:30
2001 64 144:15
2002 21 71:30
2003 15 54:15
2004 24 101:45
2005 43 112:30
2006 13 60:00
2007 3 70:30
2008 3 103:51
2009 15 78:30
2010 3 76:30
2011 150 214:15
2012 847 225:50
2013 1098 180:30
2014 72 206:35
2015 4 77:15
2016 28 101:05
2017 11 55:40
2018 11 66:31
2019 40 90:45
 
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