Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1953 1 51:15
1954 0 64:45
1955 1 81:45
1956 0 80:00
1957 0 99:45
1958 0 84:00
1959 0 77:00
1960 0 68:45
1961 0 84:30
1962 0 69:30
1963 0 53:30
1964 2 53:15
1965 0 68:30
1966 0 48:45
1967 0 31:00
1968 0 33:15
1969 0 36:15
1970 1 50:30
1971 0 38:15
1972 0 45:45
1973 1 27:15
1974 0 0:00
1975 2 55:15
1976 0 48:00
1977 0 43:15
1978 0 45:00
1979 0 52:00
1980 1 51:45
1981 3 62:00
1982 11 177:30
1983 0 4:15
1984 18 194:00
1985 8 253:45
1986 11 292:00
1987 10 282:15
1988 8 226:15
1989 13 165:45
1990 3 134:45
1991 7 127:30
1992 3 114:30
1993 1 117:45
1994 8 64:30
1995 3 90:30
1996 8 102:10
1997 3 89:00
1998 0 49:45
1999 23 162:00
2000 0 123:30
2001 18 159:00
2002 2 111:45
2003 1 68:30
2004 8 106:30
2005 2 112:30
2006 2 60:00
2007 2 70:30
2008 6 103:51
2009 0 78:30
2010 2 76:30
2011 36 214:15
2012 8 225:50
2013 2 180:30
2014 8 206:35
2015 3 77:15
2016 3 101:05
2017 0 55:40
2018 3 66:31
2019 2 90:45
 
Partners