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 5 791:25
1978 20 820:52
1979 11 934:10
1980 17 731:36
1981 4 944:01
1982 13 768:05
1983 11 673:25
1984 23 682:07
1985 60 775:03
1986 75 933:53
1987 74 1120:12
1988 73 1184:32
1989 93 1293:12
1990 91 944:40
1991 92 858:50
1992 111 759:26
1993 39 827:13
1994 44 1135:36
1995 18 1315:15
1996 21 1503:39
1997 17 1460:20
1998 8 1162:42
1999 2 1225:50
2000 8 1031:40
2001 16 1273:17
2002 18 1125:31
2003 11 1253:15
2004 2 1065:05
2005 9 1106:54
2006 5 964:46
2007 10 1081:59
2008 7 1099:59
2009 33 1282:49
2010 14 1288:05
2011 24 1234:15
2012 15 1364:55
2013 8 1352:29
2014 17 1299:50
2015 10 1223:30
2016 24 1409:54
2017 4 524:40
2018 18 1539:51
2019 8 1131:19
2020 17 1214:00
2021 10 586:00
 
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