Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
1953 440 51:15
1954 1267 64:45
1955 2100 81:45
1956 912 80:00
1957 2902 99:45
1958 3638 84:00
1959 3609 77:00
1960 522 68:45
1961 2975 84:30
1962 216 69:30
1963 759 53:30
1964 320 53:15
1965 792 68:30
1966 728 48:45
1967 337 31:00
1968 446 33:15
1969 214 36:15
1970 458 50:30
1971 231 38:15
1972 240 45:45
1973 1689 27:15
1974 0 0:00
1975 2588 55:15
1976 2514 48:00
1977 1349 43:15
1978 1711 45:00
1979 1286 52:00
1980 7290 51:45
1981 1510 62:00
1982 1887 177:30
1983 125 4:15
1984 2042 194:00
1985 3024 253:45
1986 6866 292:00
1987 2955 287:15
1988 2542 376:10
1989 5802 239:42
1990 6112 134:45
1991 1773 128:00
1992 4792 116:30
1993 2012 117:45
1994 1281 67:00
1995 5229 90:30
1996 9108 102:10
1997 7442 89:00
1998 2341 49:45
1999 4977 162:00
2000 2477 123:30
2001 3377 185:15
2002 803 143:15
2003 1073 85:30
2004 2351 106:30
2005 2962 112:30
2006 945 60:00
2007 1473 70:30
2008 3811 103:51
2009 1590 78:30
2010 2114 76:30
2011 3862 214:15
2012 3380 225:50
2013 2533 180:30
2014 8537 206:35
2015 1726 77:15
2016 943 101:05
2017 326 55:40
2018 723 66:31
2019 2696 90:45
2020 5 104:41
 
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