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 2 820:52
1979 3 934:10
1980 3 731:36
1981 3 944:01
1982 3 768:05
1983 6 673:25
1984 3 682:07
1985 3 775:03
1986 2 933:53
1987 0 1120:12
1988 1 1184:32
1989 5 1293:12
1990 12 944:40
1991 4 858:50
1992 5 759:26
1993 9 827:13
1994 15 1135:36
1995 14 1315:15
1996 25 1503:39
1997 9 1460:20
1998 16 1162:42
1999 16 1225:50
2000 6 1031:40
2001 15 1273:17
2002 5 1125:31
2003 14 1253:15
2004 41 1065:05
2005 10 1106:54
2006 17 964:46
2007 25 1081:59
2008 25 1099:59
2009 15 1282:49
2010 16 1288:05
2011 27 1234:15
2012 23 1364:55
2013 21 1352:29
2014 22 1299:50
2015 33 1223:30
2016 17 1409:54
2017 5 524:40
2018 19 1539:51
2019 19 1131:19
2020 16 1214:00
2021 8 1402:20
 
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