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 4 934:10
1980 52 731:36
1981 10 944:01
1982 32 768:05
1983 6 673:25
1984 6 682:07
1985 41 775:03
1986 27 933:53
1987 6 1120:12
1988 39 1184:32
1989 48 1293:12
1990 16 944:40
1991 38 858:50
1992 5 759:26
1993 9 827:13
1994 39 1135:36
1995 42 1315:15
1996 1 1503:39
1997 4 1460:20
1998 4 1162:42
1999 21 1225:50
2000 67 1031:40
2001 68 1273:17
2002 78 1125:31
2003 43 1253:15
2004 16 1065:05
2005 3 1106:54
2006 1 964:46
2007 300 1081:59
2008 102 1099:59
2009 5 1282:49
2010 6 1288:05
2011 76 1234:15
2012 139 1364:55
2013 39 1352:29
2014 102 1299:50
2015 38 1223:30
2016 207 1409:54
2017 1 524:40
2018 56 1539:51
2019 178 1131:19
2020 41 1214:00
2021 4 482:15
 
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