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 5 820:52
1979 4 934:10
1980 6 731:36
1981 16 944:01
1982 4 768:05
1983 2 673:25
1984 0 682:07
1985 2 775:03
1986 0 933:53
1987 1 1120:12
1988 3 1184:32
1989 22 1293:12
1990 23 944:40
1991 5 858:50
1992 2 759:26
1993 12 827:13
1994 15 1135:36
1995 37 1315:15
1996 14 1503:39
1997 30 1460:20
1998 45 1162:42
1999 38 1225:50
2000 55 1031:40
2001 43 1273:17
2002 35 1125:31
2003 33 1253:15
2004 49 1065:05
2005 40 1106:54
2006 24 964:46
2007 32 1081:59
2008 48 1099:59
2009 59 1282:49
2010 50 1288:05
2011 78 1234:15
2012 51 1364:55
2013 62 1352:29
2014 92 1299:50
2015 78 1223:30
2016 77 1409:54
2017 23 524:40
2018 81 1539:51
2019 85 1131:19
2020 94 1214:00
2021 11 610:15
 
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