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 0 791:25
1978 0 820:52
1979 0 934:10
1980 0 731:36
1981 0 944:01
1982 0 768:05
1983 0 673:25
1984 0 682:07
1985 0 775:03
1986 0 933:53
1987 0 1120:12
1988 0 1184:32
1989 0 1293:12
1990 0 944:40
1991 0 858:50
1992 0 759:26
1993 0 827:13
1994 0 1135:36
1995 1 1315:15
1996 1 1503:39
1997 2 1460:20
1998 12 1162:42
1999 5 1225:50
2000 9 1031:40
2001 2 1273:17
2002 9 1125:31
2003 29 1253:15
2004 14 1065:05
2005 8 1106:54
2006 8 964:46
2007 8 1081:59
2008 16 1099:59
2009 14 1282:49
2010 4 1288:05
2011 3 1234:15
2012 8 1364:55
2013 6 1352:29
2014 6 1299:50
2015 3 1223:30
2016 4 1409:54
2017 0 524:40
2018 11 1539:51
2019 5 1131:19
2020 2 1214:00
2021 1 1394:20
 
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