Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1953 0 51:15
1954 5 64:45
1955 2 81:45
1956 5 80:00
1957 3 99:45
1958 0 84:00
1959 6 77:00
1960 6 68:45
1961 9 84:30
1962 5 69:30
1963 1 53:30
1964 0 53:15
1965 10 68:30
1966 24 48:45
1967 0 31:00
1968 0 33:15
1969 0 36:15
1970 6 50:30
1971 1 38:15
1972 2 45:45
1973 2 27:15
1974 0 0:00
1975 2 55:15
1976 4 48:00
1977 2 43:15
1978 4 45:00
1979 63 52:00
1980 242 51:45
1981 694 62:00
1982 858 177:30
1983 4 4:15
1984 300 194:00
1985 282 253:45
1986 412 292:00
1987 1783 282:15
1988 2047 161:15
1989 1140 133:30
1990 830 116:15
1991 593 105:30
1992 3567 97:30
1993 450 117:45
1994 90 64:30
1995 713 90:30
1996 161 102:10
1997 665 89:00
1998 101 49:45
1999 1223 162:00
2000 1240 123:30
2001 378 144:15
2002 858 71:30
2003 286 54:15
2004 347 101:45
2005 680 112:30
2006 712 60:00
2007 81 70:30
2008 520 103:51
2009 506 78:30
2010 278 76:30
2011 931 214:15
2012 775 225:50
2013 758 180:30
2014 987 206:35
2015 702 77:15
2016 1365 101:05
2017 314 55:40
2018 77 66:31
2019 923 90:45
 
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