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 9 934:10
1980 1 731:36
1981 3 944:01
1982 0 768:05
1983 0 673:25
1984 1 682:07
1985 12 775:03
1986 34 933:53
1987 7 1120:12
1988 1 1184:32
1989 0 1293:12
1990 1 944:40
1991 37 858:50
1992 12 759:26
1993 55 827:13
1994 9 1135:36
1995 25 1315:15
1996 58 1503:39
1997 79 1460:20
1998 20 1162:42
1999 5 1225:50
2000 29 1031:40
2001 15 1273:17
2002 15 1125:31
2003 8 1253:15
2004 13 1065:05
2005 16 1106:54
2006 11 964:46
2007 7 1081:59
2008 20 1099:59
2009 7 1282:49
2010 21 1288:05
2011 11 1234:15
2012 5 1364:55
2013 16 1352:29
2014 1 1299:50
2015 0 1223:30
2016 2 1409:54
2017 0 524:40
2018 8 1539:51
2019 1 1131:19
2020 5 1214:00
2021 5 1004:05
 
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