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 2974 791:25
1978 4154 820:52
1979 3424 934:10
1980 1332 731:36
1981 2340 944:01
1982 4 768:05
1983 1131 673:25
1984 21 682:07
1985 307 775:03
1986 34 933:53
1987 41 1120:12
1988 38 1184:32
1989 134 1293:12
1990 94 944:40
1991 81 858:50
1992 111 759:26
1993 81 827:13
1994 119 1135:36
1995 526 1315:15
1996 240 1503:39
1997 455 1460:20
1998 368 1162:42
1999 422 1225:50
2000 170 1031:40
2001 388 1273:17
2002 497 1125:31
2003 459 1253:15
2004 297 1065:05
2005 337 1106:54
2006 298 964:46
2007 695 1081:59
2008 539 1099:59
2009 341 1282:49
2010 265 1288:05
2011 282 1234:15
2012 232 1364:55
2013 357 1352:29
2014 214 1299:50
2015 381 1223:30
2016 187 1409:54
2017 284 524:40
2018 140 1539:51
2019 255 1131:19
2020 586 1214:00
2021 8 488:15
 
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