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 858 791:25
1978 1165 820:52
1979 991 934:10
1980 613 731:36
1981 1166 944:01
1982 639 768:05
1983 546 673:25
1984 515 682:07
1985 1268 775:03
1986 460 933:53
1987 174 1120:12
1988 144 1184:32
1989 258 1293:12
1990 284 944:40
1991 355 858:50
1992 261 759:26
1993 157 827:13
1994 228 1135:36
1995 494 1315:15
1996 343 1503:39
1997 179 1460:20
1998 135 1162:42
1999 269 1225:50
2000 43 1031:40
2001 366 1273:17
2002 30 1125:31
2003 98 1253:15
2004 72 1065:05
2005 128 1106:54
2006 11 964:46
2007 17 1081:59
2008 32 1099:59
2009 154 1282:49
2010 763 1288:05
2011 22 1234:15
2012 100 1364:55
2013 11 1352:29
2014 11 1299:50
2015 17 1223:30
2016 19 1409:54
2017 6 524:40
2018 57 1539:51
2019 12 1131:19
2020 51 1214:00
2021 27 482:15
 
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