Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1953 0 51:15
1954 2 64:45
1955 29 81:45
1956 34 80:00
1957 204 99:45
1958 25 84:00
1959 327 77:00
1960 30 68:45
1961 79 84:30
1962 8 69:30
1963 66 53:30
1964 255 53:15
1965 559 68:30
1966 14 48:45
1967 16 31:00
1968 75 33:15
1969 9 36:15
1970 10 50:30
1971 1 38:15
1972 0 45:45
1973 40 27:15
1974 0 0:00
1975 6 55:15
1976 38 48:00
1977 9 43:15
1978 169 45:00
1979 140 52:00
1980 390 51:45
1981 1089 62:00
1982 38 177:30
1983 0 4:15
1984 110 194:00
1985 148 253:45
1986 522 292:00
1987 174 282:15
1988 564 286:00
1989 712 239:42
1990 81 134:45
1991 418 127:30
1992 26 116:30
1993 196 117:45
1994 291 64:30
1995 104 90:30
1996 808 102:10
1997 664 89:00
1998 102 49:45
1999 510 162:00
2000 56 123:30
2001 966 185:15
2002 166 143:15
2003 300 85:30
2004 74 106:30
2005 575 112:30
2006 53 60:00
2007 155 70:30
2008 326 103:51
2009 194 78:30
2010 217 76:30
2011 1357 214:15
2012 954 225:50
2013 1928 180:30
2014 1630 206:35
2015 180 77:15
2016 220 101:05
2017 215 55:40
2018 570 66:31
2019 528 90:45
2020 1094 77:49
 
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