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 53 791:25
1978 232 820:52
1979 196 934:10
1980 167 731:36
1981 154 944:01
1982 87 768:05
1983 147 673:25
1984 117 682:07
1985 344 775:03
1986 279 933:53
1987 238 1120:12
1988 279 1184:32
1989 93 1293:12
1990 52 944:40
1991 93 858:50
1992 75 759:26
1993 59 827:13
1994 60 1135:36
1995 94 1315:15
1996 134 1503:39
1997 98 1460:20
1998 39 1162:42
1999 71 1225:50
2000 10 1031:40
2001 26 1273:17
2002 14 1125:31
2003 108 1253:15
2004 20 1065:05
2005 49 1106:54
2006 25 964:46
2007 9 1081:59
2008 18 1099:59
2009 18 1282:49
2010 29 1288:05
2011 20 1234:15
2012 52 1364:55
2013 23 1352:29
2014 14 1299:50
2015 15 1223:30
2016 2 1409:54
2017 5 524:40
2018 7 1539:51
2019 17 1131:19
2020 38 1214:00
2021 93 1402:20
 
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