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 259 791:25
1978 159 820:52
1979 136 934:10
1980 73 731:36
1981 111 944:01
1982 188 768:05
1983 902 673:25
1984 212 682:07
1985 706 775:03
1986 105 933:53
1987 395 1120:12
1988 485 1184:32
1989 164 1293:12
1990 125 944:40
1991 219 858:50
1992 309 759:26
1993 301 827:13
1994 253 1135:36
1995 427 1315:15
1996 370 1503:39
1997 280 1460:20
1998 345 1162:42
1999 339 1225:50
2000 727 1031:40
2001 527 1273:17
2002 568 1125:31
2003 395 1253:15
2004 673 1065:05
2005 354 1106:54
2006 664 964:46
2007 725 1081:59
2008 829 1099:59
2009 213 1282:49
2010 300 1288:05
2011 136 1234:15
2012 366 1364:55
2013 212 1352:29
2014 134 1299:50
2015 279 1223:30
2016 200 1409:54
2017 407 524:40
2018 258 1539:51
2019 362 1131:19
2020 562 1214:00
2021 735 1383:20
 
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