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 15 99:45
1958 0 84:00
1959 16 77:00
1960 5 68:45
1961 0 84:30
1962 23 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 43 50:30
1971 0 38:15
1972 0 45:45
1973 0 27:15
1974 0 0:00
1975 4 55:15
1976 0 48:00
1977 0 43:15
1978 0 45:00
1979 0 52:00
1980 22 51:45
1981 66 62:00
1982 5 177:30
1983 0 4:15
1984 96 194:00
1985 20 253:45
1986 283 292:00
1987 111 282:15
1988 49 276:00
1989 68 239:42
1990 20 134:45
1991 22 127:30
1992 8 116:30
1993 1 117:45
1994 15 64:30
1995 0 90:30
1996 6 102:10
1997 2 89:00
1998 18 49:45
1999 7 162:00
2000 8 123:30
2001 0 185:15
2002 6 143:15
2003 2 85:30
2004 0 106:30
2005 1 112:30
2006 0 60:00
2007 0 70:30
2008 0 103:51
2009 0 78:30
2010 0 76:30
2011 1 214:15
2012 0 225:50
2013 0 180:30
2014 0 206:35
2015 0 77:15
2016 0 101:05
2017 0 55:40
2018 0 66:31
2019 0 90:45
2020 0 71:49
 
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