Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1953 0 51:15
1954 9 64:45
1955 0 81:45
1956 3 80:00
1957 7 99:45
1958 138 84:00
1959 36 77:00
1960 14 68:45
1961 70 84:30
1962 38 69:30
1963 13 53:30
1964 10 53:15
1965 24 68:30
1966 2 48:45
1967 19 31:00
1968 15 33:15
1969 0 36:15
1970 4 50:30
1971 138 38:15
1972 0 45:45
1973 3 27:15
1974 0 0:00
1975 11 55:15
1976 1 48:00
1977 15 43:15
1978 14 45:00
1979 3 52:00
1980 4 51:45
1981 4 62:00
1982 12 177:30
1983 0 4:15
1984 17 194:00
1985 8 253:45
1986 32 292:00
1987 30 282:15
1988 52 276:00
1989 71 239:42
1990 826 134:45
1991 23 127:30
1992 16 116:30
1993 31 117:45
1994 37 64:30
1995 84 90:30
1996 95 102:10
1997 6 89:00
1998 16 49:45
1999 24 162:00
2000 34 123:30
2001 115 185:15
2002 3 143:15
2003 23 85:30
2004 27 106:30
2005 189 112:30
2006 5 60:00
2007 25 70:30
2008 17 103:51
2009 13 78:30
2010 10 76:30
2011 34 214:15
2012 24 225:50
2013 340 180:30
2014 404 206:35
2015 19 77:15
2016 4 101:05
2017 51 55:40
2018 14 66:31
2019 63 90:45
2020 2 71:49
 
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