Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1953 0 51:15
1954 15 64:45
1955 27 81:45
1956 5 80:00
1957 0 99:45
1958 46 84:00
1959 114 77:00
1960 68 68:45
1961 21 84:30
1962 1 69:30
1963 7 53:30
1964 22 53:15
1965 19 68:30
1966 66 48:45
1967 11 31:00
1968 8 33:15
1969 23 36:15
1970 5 50:30
1971 2 38:15
1972 36 45:45
1973 6 27:15
1974 0 0:00
1975 2 55:15
1976 29 48:00
1977 1 43:15
1978 3 45:00
1979 0 52:00
1980 4 51:45
1981 0 62:00
1982 0 177:30
1983 0 4:15
1984 12 194:00
1985 0 253:45
1986 1 292:00
1987 0 282:15
1988 12 276:00
1989 60 239:42
1990 18 134:45
1991 7 127:30
1992 0 116:30
1993 22 117:45
1994 0 64:30
1995 26 90:30
1996 67 102:10
1997 31 89:00
1998 3 49:45
1999 7 162:00
2000 2 123:30
2001 17 185:15
2002 0 143:15
2003 0 85:30
2004 0 106:30
2005 24 112:30
2006 0 60:00
2007 18 70:30
2008 22 103:51
2009 5 78:30
2010 24 76:30
2011 97 214:15
2012 26 225:50
2013 7 180:30
2014 16 206:35
2015 0 77:15
2016 9 101:05
2017 0 55:40
2018 0 66:31
2019 6 90:45
2020 0 71:49
 
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