Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1960 0 0:00
1961 0 0:00
1962 0 0:00
1963 0 0:00
1964 0 0:00
1965 0 0:00
1966 0 0:00
1967 0 0:00
1968 0 0:00
1969 0 0:00
1970 0 0:00
1971 0 0:00
1972 0 0:00
1973 0 0:00
1974 0 0:00
1975 0 0:00
1976 0 0:00
1977 49 791:25
1978 101 820:52
1979 5 934:10
1980 355 731:36
1981 166 944:01
1982 274 768:05
1983 455 673:25
1984 32 682:07
1985 191 775:03
1986 90 933:53
1987 114 1120:12
1988 202 1184:32
1989 734 1293:12
1990 485 944:40
1991 127 858:50
1992 450 759:26
1993 347 827:13
1994 179 1135:36
1995 379 1315:15
1996 141 1503:39
1997 261 1460:20
1998 161 1162:42
1999 159 1225:50
2000 258 1031:40
2001 242 1273:17
2002 48 1125:31
2003 267 1253:15
2004 549 1065:05
2005 615 1106:54
2006 210 964:46
2007 555 1081:59
2008 1058 1099:59
2009 163 1282:49
2010 419 1288:05
2011 182 1234:15
2012 471 1364:55
2013 89 1352:29
2014 431 1299:50
2015 1336 1223:30
2016 860 1409:54
2017 209 524:40
2018 968 1539:51
2019 1428 1131:19
2020 903 1214:00
2021 38 729:45
 
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