Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
1953 6 51:15
1954 8 64:45
1955 5 81:45
1956 0 80:00
1957 0 99:45
1958 1 84:00
1959 1 77:00
1960 3 68:45
1961 0 84:30
1962 0 69:30
1963 0 53:30
1964 0 53:15
1965 0 68:30
1966 0 48:45
1967 0 31:00
1968 0 33:15
1969 0 36:15
1970 0 50:30
1971 1 38:15
1972 0 45:45
1973 0 27:15
1974 0 0:00
1975 10 55:15
1976 5 48:00
1977 3 43:15
1978 0 45:00
1979 0 52:00
1980 3 51:45
1981 12 62:00
1982 29 177:30
1983 2 4:15
1984 165 194:00
1985 143 253:45
1986 150 292:00
1987 465 282:15
1988 240 226:15
1989 334 165:45
1990 407 134:45
1991 1035 127:30
1992 1330 114:30
1993 463 117:45
1994 389 64:30
1995 318 90:30
1996 600 102:10
1997 826 89:00
1998 167 49:45
1999 1442 162:00
2000 1403 123:30
2001 1346 159:00
2002 1134 111:45
2003 771 68:30
2004 938 106:30
2005 1514 112:30
2006 511 60:00
2007 621 70:30
2008 1552 103:51
2009 1055 78:30
2010 641 76:30
2011 3301 214:15
2012 3117 225:50
2013 2300 180:30
2014 3747 206:35
2015 511 77:15
2016 637 101:05
2017 263 55:40
2018 1262 66:31
2019 1345 90:45
 
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