Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
1953 1173 51:15
1954 2207 64:45
1955 2369 81:45
1956 4096 80:00
1957 2100 99:45
1958 13553 84:00
1959 4376 77:00
1960 2409 68:45
1961 9297 84:30
1962 13183 69:30
1963 5339 53:30
1964 3169 53:15
1965 6349 68:30
1966 7487 48:45
1967 517 31:00
1968 3083 33:15
1969 2863 36:15
1970 7871 50:30
1971 4148 38:15
1972 3058 45:45
1973 625 27:15
1974 0 0:00
1975 742 55:15
1976 4892 48:00
1977 3114 43:15
1978 1498 45:00
1979 10137 52:00
1980 10629 51:45
1981 15650 62:00
1982 6818 177:30
1983 1255 4:15
1984 14753 194:00
1985 11551 253:45
1986 12691 292:00
1987 23922 282:15
1988 15002 176:15
1989 14596 133:30
1990 10849 116:15
1991 12204 127:30
1992 13296 114:30
1993 40737 117:45
1994 12778 64:30
1995 20414 90:30
1996 15359 102:10
1997 8048 89:00
1998 6130 49:45
1999 7858 162:00
2000 18067 123:30
2001 32087 146:30
2002 8144 71:30
2003 5907 54:15
2004 12462 106:30
2005 24180 112:30
2006 7719 60:00
2007 14618 70:30
2008 11264 103:51
2009 18905 78:30
2010 7440 76:30
2011 23768 214:15
2012 13300 225:50
2013 29916 180:30
2014 38322 206:35
2015 3174 77:15
2016 15971 101:05
2017 8830 55:40
2018 6878 66:31
2019 26798 90:45
 
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