Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1953 473 51:15
1954 119 64:45
1955 652 81:45
1956 520 80:00
1957 201 99:45
1958 611 84:00
1959 273 77:00
1960 353 68:45
1961 107 84:30
1962 88 69:30
1963 48 53:30
1964 138 53:15
1965 68 68:30
1966 53 48:45
1967 34 31:00
1968 31 33:15
1969 20 36:15
1970 61 50:30
1971 9 38:15
1972 43 45:45
1973 42 27:15
1974 0 0:00
1975 44 55:15
1976 5 48:00
1977 20 43:15
1978 32 45:00
1979 8 52:00
1980 23 51:45
1981 23 62:00
1982 25 177:30
1983 0 4:15
1984 2 194:00
1985 5 253:45
1986 12 292:00
1987 1 282:15
1988 0 286:00
1989 2 239:42
1990 1 134:45
1991 0 127:30
1992 1 116:30
1993 0 117:45
1994 2 64:30
1995 0 90:30
1996 1 102:10
1997 3 89:00
1998 0 49:45
1999 1 162:00
2000 0 123:30
2001 0 185:15
2002 1 143:15
2003 0 85:30
2004 0 106:30
2005 0 112:30
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 75:19
 
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