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 3 84:00
1959 12 77:00
1960 1 68:45
1961 17 84:30
1962 10 69:30
1963 22 53:30
1964 1 53:15
1965 12 68:30
1966 0 48:45
1967 8 31:00
1968 1 33:15
1969 0 36:15
1970 0 50:30
1971 3 38:15
1972 0 45:45
1973 0 27:15
1974 0 0:00
1975 8 55:15
1976 55 48:00
1977 24 43:15
1978 4 45:00
1979 23 52:00
1980 16 51:45
1981 108 62:00
1982 205 177:30
1983 0 4:15
1984 365 194:00
1985 273 253:45
1986 176 292:00
1987 682 282:15
1988 548 161:15
1989 124 133:30
1990 138 116:15
1991 225 105:30
1992 212 97:30
1993 132 117:45
1994 152 64:30
1995 40 90:30
1996 71 102:10
1997 16 89:00
1998 155 49:45
1999 120 162:00
2000 370 123:30
2001 274 144:15
2002 64 71:30
2003 8 54:15
2004 260 101:45
2005 446 112:30
2006 33 60:00
2007 59 70:30
2008 186 103:51
2009 278 78:30
2010 67 76:30
2011 129 214:15
2012 1463 225:50
2013 298 180:30
2014 603 206:35
2015 81 77:15
2016 135 101:05
2017 6 55:40
2018 37 66:31
2019 147 90:45
 
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