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 7 791:25
1978 32 820:52
1979 13 934:10
1980 33 731:36
1981 12 944:01
1982 26 768:05
1983 23 673:25
1984 12 682:07
1985 10 775:03
1986 18 933:53
1987 19 1120:12
1988 18 1184:32
1989 74 1293:12
1990 91 944:40
1991 15 858:50
1992 19 759:26
1993 19 827:13
1994 7 1135:36
1995 52 1315:15
1996 120 1503:39
1997 43 1460:20
1998 65 1162:42
1999 34 1225:50
2000 23 1031:40
2001 55 1273:17
2002 101 1125:31
2003 79 1253:15
2004 41 1065:05
2005 45 1106:54
2006 38 964:46
2007 263 1081:59
2008 94 1099:59
2009 160 1282:49
2010 82 1288:05
2011 55 1234:15
2012 71 1364:55
2013 99 1352:29
2014 168 1299:50
2015 255 1223:30
2016 136 1409:54
2017 221 524:40
2018 148 1539:51
2019 155 1131:19
2020 150 1214:00
2021 128 1388:50
 
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