Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
1953 122 51:15
1954 211 64:45
1955 147 81:45
1956 275 80:00
1957 100 99:45
1958 219 84:00
1959 218 77:00
1960 117 68:45
1961 255 84:30
1962 260 69:30
1963 52 53:30
1964 17 53:15
1965 99 68:30
1966 144 48:45
1967 28 31:00
1968 19 33:15
1969 59 36:15
1970 49 50:30
1971 70 38:15
1972 177 45:45
1973 13 27:15
1974 0 0:00
1975 17 55:15
1976 134 48:00
1977 144 43:15
1978 90 45:00
1979 230 52:00
1980 260 51:45
1981 280 62:00
1982 391 177:30
1983 99 4:15
1984 597 194:00
1985 474 253:45
1986 792 292:00
1987 1210 287:15
1988 1073 376:10
1989 696 239:42
1990 845 134:45
1991 685 128:00
1992 834 116:30
1993 773 117:45
1994 333 67:00
1995 895 90:30
1996 370 102:10
1997 576 89:00
1998 241 49:45
1999 500 162:00
2000 552 123:30
2001 782 185:15
2002 295 143:15
2003 228 85:30
2004 363 106:30
2005 518 112:30
2006 328 60:00
2007 257 70:30
2008 219 103:51
2009 174 78:30
2010 358 76:30
2011 1103 214:15
2012 425 225:50
2013 814 180:30
2014 1246 206:35
2015 397 77:15
2016 579 101:05
2017 205 55:40
2018 382 66:31
2019 530 90:45
2020 599 172:21
2021 464 142:00
 
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