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 120 791:25
1978 116 820:52
1979 215 934:10
1980 105 731:36
1981 85 944:01
1982 157 768:05
1983 83 673:25
1984 54 682:07
1985 113 775:03
1986 183 933:53
1987 460 1120:12
1988 282 1184:32
1989 162 1293:12
1990 142 944:40
1991 146 858:50
1992 152 759:26
1993 279 827:13
1994 144 1135:36
1995 309 1315:15
1996 248 1503:39
1997 134 1460:20
1998 291 1162:42
1999 177 1225:50
2000 355 1031:40
2001 347 1273:17
2002 349 1125:31
2003 499 1253:15
2004 358 1065:05
2005 473 1106:54
2006 289 964:46
2007 468 1081:59
2008 415 1099:59
2009 331 1282:49
2010 451 1288:05
2011 314 1234:15
2012 371 1364:55
2013 515 1352:29
2014 508 1299:50
2015 374 1223:30
2016 540 1409:54
2017 313 524:40
2018 644 1539:51
2019 427 1131:19
2020 459 1214:00
2021 477 1212:50
 
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