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 33 791:25
1978 12 820:52
1979 2 934:10
1980 5 731:36
1981 3 944:01
1982 18 768:05
1983 28 673:25
1984 12 682:07
1985 10 775:03
1986 7 933:53
1987 18 1120:12
1988 31 1184:32
1989 8 1293:12
1990 16 944:40
1991 21 858:50
1992 31 759:26
1993 53 827:13
1994 23 1135:36
1995 41 1315:15
1996 110 1503:39
1997 31 1460:20
1998 57 1162:42
1999 28 1225:50
2000 43 1031:40
2001 107 1273:17
2002 77 1125:31
2003 36 1253:15
2004 43 1065:05
2005 35 1106:54
2006 17 964:46
2007 11 1081:59
2008 16 1099:59
2009 13 1282:49
2010 9 1288:05
2011 4 1234:15
2012 32 1364:55
2013 21 1352:29
2014 12 1299:50
2015 30 1223:30
2016 24 1409:54
2017 44 524:40
2018 6 1539:51
2019 16 1131:19
2020 33 1214:00
2021 3 1018:00
 
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