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 229 791:25
1978 142 820:52
1979 131 934:10
1980 150 731:36
1981 50 944:01
1982 182 768:05
1983 111 673:25
1984 87 682:07
1985 89 775:03
1986 170 933:53
1987 109 1120:12
1988 78 1184:32
1989 153 1293:12
1990 134 944:40
1991 61 858:50
1992 10 759:26
1993 33 827:13
1994 44 1135:36
1995 109 1315:15
1996 87 1503:39
1997 34 1460:20
1998 8 1162:42
1999 19 1225:50
2000 0 1031:40
2001 11 1273:17
2002 20 1125:31
2003 15 1253:15
2004 13 1065:05
2005 14 1106:54
2006 69 964:46
2007 33 1081:59
2008 32 1099:59
2009 33 1282:49
2010 5 1288:05
2011 48 1234:15
2012 21 1364:55
2013 4 1352:29
2014 17 1299:50
2015 7 1223:30
2016 8 1409:54
2017 2 524:40
2018 7 1539:51
2019 2 1131:19
2020 4 1214:00
2021 0 305:00
 
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