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 2 99:45
1958 5 84:00
1959 0 77:00
1960 1 68:45
1961 1 84:30
1962 3 69:30
1963 0 53:30
1964 0 53:15
1965 5 68:30
1966 9 48:45
1967 3 31:00
1968 10 33:15
1969 0 36:15
1970 0 50:30
1971 8 38:15
1972 90 45:45
1973 0 27:15
1974 0 0:00
1975 10 55:15
1976 3 48:00
1977 10 43:15
1978 6 45:00
1979 10 52:00
1980 11 51:45
1981 37 62:00
1982 41 177:30
1983 3 4:15
1984 62 194:00
1985 40 253:45
1986 35 292:00
1987 62 282:15
1988 72 286:00
1989 96 239:42
1990 49 134:45
1991 109 127:30
1992 61 116:30
1993 26 117:45
1994 23 64:30
1995 12 90:30
1996 50 102:10
1997 18 89:00
1998 9 49:45
1999 36 162:00
2000 11 123:30
2001 110 185:15
2002 72 143:15
2003 51 85:30
2004 15 106:30
2005 32 112:30
2006 11 60:00
2007 21 70:30
2008 50 103:51
2009 41 78:30
2010 23 76:30
2011 139 214:15
2012 160 225:50
2013 70 180:30
2014 100 206:35
2015 6 77:15
2016 21 101:05
2017 27 55:40
2018 16 66:31
2019 13 90:45
2020 57 75:19
 
Partners