Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1953 2666 51:15
1954 1243 64:45
1955 2354 81:45
1956 1611 80:00
1957 2420 99:45
1958 1490 84:00
1959 2304 77:00
1960 1678 68:45
1961 695 84:30
1962 41 69:30
1963 697 53:30
1964 2232 53:15
1965 1625 68:30
1966 475 48:45
1967 15 31:00
1968 306 33:15
1969 85 36:15
1970 320 50:30
1971 404 38:15
1972 265 45:45
1973 740 27:15
1974 0 0:00
1975 433 55:15
1976 570 48:00
1977 693 43:15
1978 266 45:00
1979 298 52:00
1980 2041 51:45
1981 2075 62:00
1982 1146 177:30
1983 24 4:15
1984 3923 194:00
1985 5891 253:45
1986 2267 292:00
1987 2969 282:15
1988 4439 226:15
1989 1642 165:45
1990 3146 134:45
1991 3425 127:30
1992 3388 116:30
1993 7844 117:45
1994 2624 64:30
1995 2269 90:30
1996 3909 102:10
1997 9110 89:00
1998 3168 49:45
1999 10081 162:00
2000 2148 123:30
2001 3492 181:15
2002 435 143:15
2003 3610 85:30
2004 12219 106:30
2005 1986 112:30
2006 666 60:00
2007 4180 70:30
2008 1837 103:51
2009 2226 78:30
2010 1291 76:30
2011 15201 214:15
2012 4799 225:50
2013 1247 180:30
2014 2619 206:35
2015 1513 77:15
2016 228 101:05
2017 1143 55:40
2018 1457 66:31
2019 1349 90:45
2020 49 15:44
 
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