Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1953 1 51:15
1954 1 64:45
1955 2 81:45
1956 3 80:00
1957 0 99:45
1958 0 84:00
1959 1 77:00
1960 0 68:45
1961 1 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 1 55:15
1976 0 48:00
1977 4 43:15
1978 1 45:00
1979 0 52:00
1980 3 51:45
1981 10 62:00
1982 11 177:30
1983 1 4:15
1984 44 194:00
1985 14 253:45
1986 31 292:00
1987 23 287:15
1988 22 376:10
1989 12 239:42
1990 17 134:45
1991 12 128:00
1992 9 116:30
1993 2 117:45
1994 2 67:00
1995 4 90:30
1996 3 102:10
1997 2 89:00
1998 0 49:45
1999 11 162:00
2000 13 123:30
2001 8 185:15
2002 4 143:15
2003 7 85:30
2004 4 106:30
2005 3 112:30
2006 3 60:00
2007 2 70:30
2008 6 103:51
2009 5 78:30
2010 4 76:30
2011 9 214:15
2012 39 225:50
2013 6 180:30
2014 15 206:35
2015 1 77:15
2016 5 101:05
2017 3 55:40
2018 0 66:31
2019 1 90:45
2020 3 152:21
 
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