Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
1953 0 51:15
1954 154 64:45
1955 10 81:45
1956 285 80:00
1957 1592 99:45
1958 44 84:00
1959 137 77:00
1960 4 68:45
1961 148 84:30
1962 107 69:30
1963 294 53:30
1964 132 53:15
1965 87 68:30
1966 45 48:45
1967 166 31:00
1968 16 33:15
1969 26 36:15
1970 8 50:30
1971 174 38:15
1972 140 45:45
1973 30 27:15
1974 0 0:00
1975 45 55:15
1976 23 48:00
1977 297 43:15
1978 113 45:00
1979 16 52:00
1980 218 51:45
1981 139 62:00
1982 118 177:30
1983 60 4:15
1984 294 194:00
1985 159 253:45
1986 285 292:00
1987 56 287:15
1988 636 376:10
1989 1011 239:42
1990 306 134:45
1991 175 128:00
1992 230 116:30
1993 250 117:45
1994 332 67:00
1995 109 90:30
1996 287 102:10
1997 178 89:00
1998 153 49:45
1999 882 162:00
2000 31 123:30
2001 678 185:15
2002 117 143:15
2003 180 85:30
2004 251 106:30
2005 724 112:30
2006 73 60:00
2007 382 70:30
2008 1770 103:51
2009 128 78:30
2010 331 76:30
2011 221 214:15
2012 768 225:50
2013 110 180:30
2014 235 206:35
2015 200 77:15
2016 12 101:05
2017 270 55:40
2018 22 66:31
2019 637 90:45
2020 222 172:21
2021 2367 142:00
2022 0 39:57
 
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