Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1953 0 51:15
1954 1373 64:45
1955 54 81:45
1956 15 80:00
1957 1141 99:45
1958 23 84:00
1959 218 77:00
1960 8 68:45
1961 279 84:30
1962 78 69:30
1963 511 53:30
1964 229 53:15
1965 117 68:30
1966 74 48:45
1967 84 31:00
1968 24 33:15
1969 36 36:15
1970 25 50:30
1971 746 38:15
1972 71 45:45
1973 92 27:15
1974 0 0:00
1975 247 55:15
1976 5 48:00
1977 327 43:15
1978 383 45:00
1979 104 52:00
1980 185 51:45
1981 112 62:00
1982 200 177:30
1983 42 4:15
1984 301 194:00
1985 371 253:45
1986 577 292:00
1987 119 282:15
1988 147 226:15
1989 186 165:45
1990 135 134:45
1991 59 127:30
1992 36 114:30
1993 50 117:45
1994 63 64:30
1995 31 90:30
1996 283 102:10
1997 135 89:00
1998 59 49:45
1999 300 162:00
2000 7 123:30
2001 152 159:00
2002 16 92:30
2003 35 68:30
2004 61 106:30
2005 548 112:30
2006 17 60:00
2007 76 70:30
2008 475 103:51
2009 26 78:30
2010 94 76:30
2011 114 214:15
2012 528 225:50
2013 109 180:30
2014 217 206:35
2015 45 77:15
2016 29 101:05
2017 106 55:40
2018 82 66:31
2019 176 90:45
 
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