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 16 791:25
1978 31 820:52
1979 3 934:10
1980 106 731:36
1981 39 944:01
1982 44 768:05
1983 0 673:25
1984 28 682:07
1985 38 775:03
1986 48 933:53
1987 36 1120:12
1988 60 1184:32
1989 32 1293:12
1990 31 944:40
1991 8 858:50
1992 6 759:26
1993 1 827:13
1994 18 1135:36
1995 81 1315:15
1996 57 1503:39
1997 45 1460:20
1998 5 1162:42
1999 26 1225:50
2000 4 1031:40
2001 53 1273:17
2002 11 1125:31
2003 51 1253:15
2004 2 1065:05
2005 40 1106:54
2006 2 964:46
2007 53 1081:59
2008 10 1099:59
2009 1 1282:49
2010 20 1288:05
2011 15 1234:15
2012 11 1364:55
2013 34 1352:29
2014 0 1299:50
2015 1 1223:30
2016 13 1409:54
2017 28 524:40
2018 10 1539:51
2019 2 1131:19
2020 11 1214:00
2021 1 729:45
 
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