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 1 820:52
1979 1 934:10
1980 3 731:36
1981 3 944:01
1982 7 768:05
1983 1 673:25
1984 2 682:07
1985 2 775:03
1986 4 933:53
1987 9 1120:12
1988 3 1184:32
1989 8 1293:12
1990 5 944:40
1991 8 858:50
1992 6 759:26
1993 5 827:13
1994 20 1135:36
1995 19 1315:15
1996 12 1503:39
1997 25 1460:20
1998 18 1162:42
1999 4 1225:50
2000 16 1031:40
2001 1 1273:17
2002 9 1125:31
2003 20 1253:15
2004 8 1065:05
2005 8 1106:54
2006 4 964:46
2007 5 1081:59
2008 2 1099:59
2009 3 1282:49
2010 5 1288:05
2011 5 1234:15
2012 9 1364:55
2013 8 1352:29
2014 11 1299:50
2015 3 1223:30
2016 5 1409:54
2017 1 524:40
2018 6 1539:51
2019 4 1131:19
2020 2 1214:00
2021 1 583:00
 
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