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 1297 791:25
1978 902 820:52
1979 1327 934:10
1980 812 731:36
1981 579 944:01
1982 985 768:05
1983 871 673:25
1984 759 682:07
1985 753 775:03
1986 2552 933:53
1987 2208 1120:12
1988 1529 1184:32
1989 893 1293:12
1990 559 944:40
1991 436 858:50
1992 524 759:26
1993 480 827:13
1994 306 1135:36
1995 623 1315:15
1996 277 1503:39
1997 267 1460:20
1998 114 1162:42
1999 184 1225:50
2000 453 1031:40
2001 481 1273:17
2002 227 1125:31
2003 489 1253:15
2004 182 1065:05
2005 190 1106:54
2006 132 964:46
2007 149 1081:59
2008 122 1099:59
2009 168 1282:49
2010 112 1288:05
2011 116 1234:15
2012 80 1364:55
2013 99 1352:29
2014 175 1299:50
2015 37 1223:30
2016 84 1409:54
2017 76 524:40
2018 149 1539:51
2019 68 1131:19
2020 55 1214:00
2021 24 742:15
 
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