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 3 791:25
1978 3 820:52
1979 4 934:10
1980 0 731:36
1981 14 944:01
1982 1 768:05
1983 2 673:25
1984 4 682:07
1985 2 775:03
1986 2 933:53
1987 2 1120:12
1988 1 1184:32
1989 1 1293:12
1990 4 944:40
1991 2 858:50
1992 2 759:26
1993 0 827:13
1994 5 1135:36
1995 2 1315:15
1996 2 1503:39
1997 2 1460:20
1998 1 1162:42
1999 4 1225:50
2000 0 1031:40
2001 2 1273:17
2002 2 1125:31
2003 3 1253:15
2004 0 1065:05
2005 4 1106:54
2006 4 964:46
2007 1 1081:59
2008 2 1099:59
2009 1 1282:49
2010 7 1288:05
2011 2 1234:15
2012 1 1364:55
2013 0 1352:29
2014 0 1299:50
2015 0 1223:30
2016 0 1409:54
2017 1 524:40
2018 0 1539:51
2019 0 1131:19
2020 0 1214:00
2021 0 177:45
 
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