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 3 820:52
1979 6 934:10
1980 3 731:36
1981 8 944:01
1982 9 768:05
1983 7 673:25
1984 5 682:07
1985 5 775:03
1986 4 933:53
1987 2 1120:12
1988 4 1184:32
1989 17 1293:12
1990 9 944:40
1991 2 858:50
1992 4 759:26
1993 5 827:13
1994 1 1135:36
1995 6 1315:15
1996 5 1503:39
1997 3 1460:20
1998 10 1162:42
1999 6 1225:50
2000 2 1031:40
2001 3 1273:17
2002 3 1125:31
2003 5 1253:15
2004 3 1065:05
2005 1 1106:54
2006 4 964:46
2007 2 1081:59
2008 3 1099:59
2009 2 1282:49
2010 3 1288:05
2011 6 1234:15
2012 10 1364:55
2013 4 1352:29
2014 4 1299:50
2015 5 1223:30
2016 13 1409:54
2017 0 524:40
2018 7 1539:51
2019 8 1131:19
2020 6 1214:00
2021 0 482:15
 
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