Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
1953 350 51:15
1954 383 64:45
1955 100 81:45
1956 7 80:00
1957 314 99:45
1958 18 84:00
1959 244 77:00
1960 60 68:45
1961 58 84:30
1962 33 69:30
1963 113 53:30
1964 10 53:15
1965 94 68:30
1966 558 48:45
1967 346 31:00
1968 303 33:15
1969 19 36:15
1970 34 50:30
1971 438 38:15
1972 269 45:45
1973 321 27:15
1974 0 0:00
1975 103 55:15
1976 109 48:00
1977 32 43:15
1978 81 45:00
1979 57 52:00
1980 150 51:45
1981 106 62:00
1982 148 177:30
1983 3 4:15
1984 311 194:00
1985 2242 253:45
1986 7726 292:00
1987 1875 287:15
1988 853 376:10
1989 1446 239:42
1990 825 134:45
1991 916 128:00
1992 790 116:30
1993 575 117:45
1994 1320 67:00
1995 5092 90:30
1996 6270 102:10
1997 4071 89:00
1998 2183 49:45
1999 1059 162:00
2000 223 123:30
2001 1446 185:15
2002 75 143:15
2003 2359 85:30
2004 1056 106:30
2005 4203 112:30
2006 364 60:00
2007 1188 70:30
2008 382 103:51
2009 331 78:30
2010 549 76:30
2011 1372 214:15
2012 1211 225:50
2013 665 180:30
2014 665 206:35
2015 415 77:15
2016 208 101:05
2017 539 55:40
2018 6907 66:31
2019 487 90:45
2020 770 172:21
2021 0 45:45
 
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