Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1953 15 51:15
1954 9 64:45
1955 37 81:45
1956 158 80:00
1957 8 99:45
1958 54 84:00
1959 71 77:00
1960 13 68:45
1961 18 84:30
1962 0 69:30
1963 0 53:30
1964 0 53:15
1965 0 68:30
1966 0 48:45
1967 8 31:00
1968 0 33:15
1969 0 36:15
1970 0 50:30
1971 55 38:15
1972 25 45:45
1973 0 27:15
1974 0 0:00
1975 13 55:15
1976 6 48:00
1977 12 43:15
1978 0 45:00
1979 93 52:00
1980 12 51:45
1981 21 62:00
1982 207 177:30
1983 0 4:15
1984 91 194:00
1985 382 253:45
1986 718 292:00
1987 9 282:15
1988 0 276:00
1989 93 239:42
1990 1 134:45
1991 15 127:30
1992 9 116:30
1993 2 117:45
1994 0 64:30
1995 0 90:30
1996 0 102:10
1997 0 89:00
1998 3 49:45
1999 0 162:00
2000 108 123:30
2001 26 185:15
2002 0 143:15
2003 1 85:30
2004 0 106:30
2005 17 112:30
2006 0 60:00
2007 1 70:30
2008 137 103:51
2009 7 78:30
2010 3 76:30
2011 9 214:15
2012 6 225:50
2013 7 180:30
2014 2 206:35
2015 4 77:15
2016 1 101:05
2017 0 55:40
2018 1 66:31
2019 1 90:45
2020 8 71:49
 
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