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 2 820:52
1979 2 934:10
1980 4 731:36
1981 3 944:01
1982 1 768:05
1983 0 673:25
1984 1 682:07
1985 5 775:03
1986 8 933:53
1987 2 1120:12
1988 4 1184:32
1989 2 1293:12
1990 0 944:40
1991 9 858:50
1992 0 759:26
1993 0 827:13
1994 0 1135:36
1995 0 1315:15
1996 0 1503:39
1997 0 1460:20
1998 0 1162:42
1999 0 1225:50
2000 3 1031:40
2001 4 1273:17
2002 15 1125:31
2003 20 1253:15
2004 13 1065:05
2005 22 1106:54
2006 24 964:46
2007 60 1081:59
2008 57 1099:59
2009 77 1282:49
2010 58 1288:05
2011 47 1234:15
2012 52 1364:55
2013 28 1352:29
2014 20 1299:50
2015 25 1223:30
2016 12 1409:54
2017 6 524:40
2018 6 1539:51
2019 2 1131:19
2020 9 1214:00
2021 0 617:15
 
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