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 2 791:25
1978 0 820:52
1979 0 934:10
1980 2 731:36
1981 1 944:01
1982 3 768:05
1983 0 673:25
1984 0 682:07
1985 2 775:03
1986 0 933:53
1987 2 1120:12
1988 2 1184:32
1989 4 1293:12
1990 3 944:40
1991 1 858:50
1992 2 759:26
1993 4 827:13
1994 3 1135:36
1995 1 1315:15
1996 2 1503:39
1997 2 1460:20
1998 3 1162:42
1999 2 1225:50
2000 3 1031:40
2001 2 1273:17
2002 3 1125:31
2003 1 1253:15
2004 3 1065:05
2005 1 1106:54
2006 1 964:46
2007 0 1081:59
2008 1 1099:59
2009 0 1282:49
2010 1 1288:05
2011 3 1234:15
2012 2 1364:55
2013 1 1352:29
2014 1 1299:50
2015 0 1223:30
2016 1 1409:54
2017 0 524:40
2018 1 1539:51
2019 1 1131:19
2020 1 1214:00
2021 1 1013:15
 
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