Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1953 12 51:15
1954 0 64:45
1955 0 81:45
1956 0 80:00
1957 0 99:45
1958 0 84:00
1959 0 77:00
1960 0 68:45
1961 34 84:30
1962 0 69:30
1963 0 53:30
1964 0 53:15
1965 5 68:30
1966 350 48:45
1967 0 31:00
1968 0 33:15
1969 156 36:15
1970 0 50:30
1971 390 38:15
1972 30 45:45
1973 520 27:15
1974 0 0:00
1975 0 55:15
1976 0 48:00
1977 0 43:15
1978 0 45:00
1979 110 52:00
1980 618 51:45
1981 1670 62:00
1982 4867 177:30
1983 436 4:15
1984 9071 194:00
1985 23514 253:45
1986 3387 292:00
1987 5236 282:15
1988 4337 226:15
1989 4327 165:45
1990 3505 134:45
1991 836 127:30
1992 3629 116:30
1993 1235 117:45
1994 1563 64:30
1995 151 90:30
1996 664 102:10
1997 305 89:00
1998 38 49:45
1999 393 162:00
2000 768 123:30
2001 677 181:15
2002 2036 143:15
2003 726 85:30
2004 512 106:30
2005 804 112:30
2006 560 60:00
2007 275 70:30
2008 1131 103:51
2009 549 78:30
2010 792 76:30
2011 2338 214:15
2012 5680 225:50
2013 15062 180:30
2014 7055 206:35
2015 569 77:15
2016 1516 101:05
2017 358 55:40
2018 312 66:31
2019 1892 90:45
2020 2134 15:44
 
Partners