Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1953 95 51:15
1954 91 64:45
1955 108 81:45
1956 229 80:00
1957 216 99:45
1958 837 84:00
1959 820 77:00
1960 430 68:45
1961 835 84:30
1962 480 69:30
1963 302 53:30
1964 198 53:15
1965 191 68:30
1966 589 48:45
1967 61 31:00
1968 40 33:15
1969 1993 36:15
1970 380 50:30
1971 1163 38:15
1972 2641 45:45
1973 259 27:15
1974 0 0:00
1975 482 55:15
1976 506 48:00
1977 448 43:15
1978 198 45:00
1979 684 52:00
1980 618 51:45
1981 1249 62:00
1982 2402 177:30
1983 188 4:15
1984 1376 194:00
1985 1144 253:45
1986 2200 292:00
1987 2518 287:15
1988 3073 376:10
1989 4092 239:42
1990 2323 134:45
1991 877 128:00
1992 1464 116:30
1993 1767 117:45
1994 934 67:00
1995 2310 90:30
1996 1736 102:10
1997 1230 89:00
1998 227 49:45
1999 859 162:00
2000 1564 123:30
2001 1763 185:15
2002 943 143:15
2003 593 85:30
2004 1739 106:30
2005 2890 112:30
2006 1122 60:00
2007 806 70:30
2008 522 103:51
2009 1152 78:30
2010 731 76:30
2011 3379 214:15
2012 1078 225:50
2013 1279 180:30
2014 6445 206:35
2015 896 77:15
2016 2522 101:05
2017 1263 55:40
2018 4489 66:31
2019 3198 90:45
2020 416 99:49
 
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