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 0 68:45
1961 1 84:30
1962 0 69:30
1963 0 53:30
1964 0 53:15
1965 1 68:30
1966 1 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 0 55:15
1976 0 48:00
1977 0 43:15
1978 0 45:00
1979 0 52:00
1980 0 51:45
1981 1 62:00
1982 7 177:30
1983 0 4:15
1984 27 194:00
1985 56 253:45
1986 55 292:00
1987 36 282:15
1988 18 246:00
1989 21 239:42
1990 20 134:45
1991 66 127:30
1992 3 116:30
1993 7 117:45
1994 1 64:30
1995 0 90:30
1996 0 102:10
1997 1 89:00
1998 0 49:45
1999 3 162:00
2000 16 123:30
2001 11 185:15
2002 15 143:15
2003 39 85:30
2004 24 106:30
2005 1 112:30
2006 7 60:00
2007 0 70:30
2008 57 103:51
2009 171 78:30
2010 2 76:30
2011 235 214:15
2012 243 225:50
2013 133 180:30
2014 380 206:35
2015 123 77:15
2016 96 101:05
2017 42 55:40
2018 53 66:31
2019 85 90:45
2020 981 71:49
 
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