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 1 791:25
1978 2 820:52
1979 3 934:10
1980 1 731:36
1981 2 944:01
1982 1 768:05
1983 1 673:25
1984 0 682:07
1985 0 775:03
1986 1 933:53
1987 1 1120:12
1988 5 1184:32
1989 6 1293:12
1990 16 944:40
1991 7 858:50
1992 5 759:26
1993 4 827:13
1994 5 1135:36
1995 4 1315:15
1996 7 1503:39
1997 5 1460:20
1998 3 1162:42
1999 3 1225:50
2000 2 1031:40
2001 5 1273:17
2002 2 1125:31
2003 5 1253:15
2004 5 1065:05
2005 4 1106:54
2006 0 964:46
2007 4 1081:59
2008 9 1099:59
2009 4 1282:49
2010 5 1288:05
2011 8 1234:15
2012 6 1364:55
2013 4 1352:29
2014 1 1299:50
2015 8 1223:30
2016 6 1409:54
2017 0 524:40
2018 8 1539:51
2019 3 1131:19
2020 8 1214:00
2021 0 39:00
 
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