Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1953 4 51:15
1954 252 64:45
1955 0 81:45
1956 6 80:00
1957 0 99:45
1958 7 84:00
1959 0 77:00
1960 0 68:45
1961 3 84:30
1962 2 69:30
1963 0 53:30
1964 0 53:15
1965 8 68:30
1966 4 48:45
1967 4 31:00
1968 0 33:15
1969 0 36:15
1970 0 50:30
1971 4 38:15
1972 5 45:45
1973 0 27:15
1974 0 0:00
1975 12 55:15
1976 2 48:00
1977 8 43:15
1978 48 45:00
1979 0 52:00
1980 2 51:45
1981 17 62:00
1982 80 177:30
1983 0 4:15
1984 32 194:00
1985 75 253:45
1986 40 292:00
1987 21 282:15
1988 199 226:15
1989 85 165:45
1990 6 134:45
1991 32 127:30
1992 400 114:30
1993 49 117:45
1994 10 64:30
1995 9 90:30
1996 3 102:10
1997 44 89:00
1998 0 49:45
1999 86 162:00
2000 228 123:30
2001 23 159:00
2002 123 111:45
2003 155 68:30
2004 216 106:30
2005 75 112:30
2006 67 60:00
2007 66 70:30
2008 786 103:51
2009 113 78:30
2010 278 76:30
2011 1260 214:15
2012 1869 225:50
2013 567 180:30
2014 1334 206:35
2015 560 77:15
2016 752 101:05
2017 213 55:40
2018 190 66:31
2019 756 90:45
 
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