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 80 791:25
1978 53 820:52
1979 55 934:10
1980 119 731:36
1981 119 944:01
1982 59 768:05
1983 195 673:25
1984 172 682:07
1985 208 775:03
1986 27 933:53
1987 0 1120:12
1988 105 1184:32
1989 100 1293:12
1990 88 944:40
1991 29 858:50
1992 101 759:26
1993 285 827:13
1994 78 1135:36
1995 60 1315:15
1996 134 1503:39
1997 23 1460:20
1998 34 1162:42
1999 22 1225:50
2000 4 1031:40
2001 4 1273:17
2002 36 1125:31
2003 61 1253:15
2004 31 1065:05
2005 24 1106:54
2006 4 964:46
2007 75 1081:59
2008 15 1099:59
2009 26 1282:49
2010 38 1288:05
2011 57 1234:15
2012 22 1364:55
2013 4 1352:29
2014 0 1299:50
2015 0 1223:30
2016 10 1409:54
2017 0 524:40
2018 0 1539:51
2019 30 1131:19
2020 4 1214:00
2021 0 488:15
 
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