Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1953 7343 51:15
1954 102 64:45
1955 908 81:45
1956 211 80:00
1957 6625 99:45
1958 644 84:00
1959 204 77:00
1960 402 68:45
1961 4431 84:30
1962 333 69:30
1963 1242 53:30
1964 2014 53:15
1965 579 68:30
1966 66 48:45
1967 25 31:00
1968 124 33:15
1969 410 36:15
1970 5026 50:30
1971 890 38:15
1972 147 45:45
1973 115 27:15
1974 0 0:00
1975 492 55:15
1976 103 48:00
1977 40 43:15
1978 162 45:00
1979 168 52:00
1980 311 51:45
1981 1808 62:00
1982 2321 177:30
1983 0 4:15
1984 459 194:00
1985 1811 253:45
1986 5979 292:00
1987 5420 282:15
1988 3199 286:00
1989 735 239:42
1990 1022 134:45
1991 344 127:30
1992 532 116:30
1993 353 117:45
1994 527 64:30
1995 5885 90:30
1996 3815 102:10
1997 4248 89:00
1998 993 49:45
1999 7763 162:00
2000 25561 123:30
2001 2950 185:15
2002 48 143:15
2003 16972 85:30
2004 11759 106:30
2005 2456 112:30
2006 160 60:00
2007 2024 70:30
2008 10693 103:51
2009 646 78:30
2010 441 76:30
2011 6376 214:15
2012 6040 225:50
2013 4664 180:30
2014 7896 206:35
2015 185 77:15
2016 2756 101:05
2017 572 55:40
2018 1394 66:31
2019 3720 90:45
2020 11 75:19
 
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