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 44 791:25
1978 24 820:52
1979 40 934:10
1980 38 731:36
1981 54 944:01
1982 39 768:05
1983 28 673:25
1984 16 682:07
1985 20 775:03
1986 52 933:53
1987 37 1120:12
1988 40 1184:32
1989 39 1293:12
1990 61 944:40
1991 31 858:50
1992 48 759:26
1993 53 827:13
1994 28 1135:36
1995 68 1315:15
1996 45 1503:39
1997 67 1460:20
1998 44 1162:42
1999 45 1225:50
2000 33 1031:40
2001 50 1273:17
2002 33 1125:31
2003 38 1253:15
2004 54 1065:05
2005 26 1106:54
2006 23 964:46
2007 40 1081:59
2008 44 1099:59
2009 36 1282:49
2010 33 1288:05
2011 52 1234:15
2012 35 1364:55
2013 63 1352:29
2014 26 1299:50
2015 41 1223:30
2016 46 1409:54
2017 11 524:40
2018 45 1539:51
2019 62 1131:19
2020 68 1214:00
2021 46 1166:30
 
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