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 1 68:45
1961 0 84:30
1962 0 69:30
1963 0 53:30
1964 0 53:15
1965 2 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 6 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 1 52:00
1980 0 51:45
1981 1 62:00
1982 14 177:30
1983 0 4:15
1984 10 194:00
1985 9 253:45
1986 7 292:00
1987 28 282:15
1988 23 276:00
1989 5 239:42
1990 18 134:45
1991 6 127:30
1992 4 116:30
1993 7 117:45
1994 4 64:30
1995 1 90:30
1996 2 102:10
1997 14 89:00
1998 2 49:45
1999 8 162:00
2000 7 123:30
2001 46 185:15
2002 7 143:15
2003 3 85:30
2004 7 106:30
2005 6 112:30
2006 4 60:00
2007 6 70:30
2008 14 103:51
2009 14 78:30
2010 4 76:30
2011 42 214:15
2012 43 225:50
2013 25 180:30
2014 75 206:35
2015 8 77:15
2016 21 101:05
2017 36 55:40
2018 0 66:31
2019 6 90:45
2020 27 71:49
 
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