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 1 80:00
1957 0 99:45
1958 2 84:00
1959 0 77:00
1960 2 68:45
1961 0 84:30
1962 0 69:30
1963 0 53:30
1964 1 53:15
1965 0 68:30
1966 0 48:45
1967 0 31:00
1968 1 33:15
1969 0 36:15
1970 0 50:30
1971 1 38:15
1972 0 45:45
1973 0 27:15
1974 0 0:00
1975 1 55:15
1976 0 48:00
1977 2 43:15
1978 1 45:00
1979 1 52:00
1980 2 51:45
1981 6 62:00
1982 123 177:30
1983 0 4:15
1984 99 194:00
1985 92 253:45
1986 88 292:00
1987 1632 282:15
1988 342 161:15
1989 0 133:30
1990 144 116:15
1991 171 105:30
1992 43 97:30
1993 846 117:45
1994 12 64:30
1995 2 90:30
1996 0 102:10
1997 0 89:00
1998 1 49:45
1999 1201 162:00
2000 232 123:30
2001 262 144:15
2002 1112 71:30
2003 3 54:15
2004 4627 101:45
2005 6 112:30
2006 98 60:00
2007 0 70:30
2008 168 103:51
2009 378 78:30
2010 170 76:30
2011 699 214:15
2012 4648 225:50
2013 5384 180:30
2014 948 206:35
2015 383 77:15
2016 307 101:05
2017 652 55:40
2018 32 66:31
2019 2 90:45
 
Partners