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 240 791:25
1978 237 820:52
1979 253 934:10
1980 394 731:36
1981 252 944:01
1982 447 768:05
1983 148 673:25
1984 192 682:07
1985 292 775:03
1986 289 933:53
1987 1493 1120:12
1988 1493 1184:32
1989 1805 1293:12
1990 1155 944:40
1991 1068 858:50
1992 1300 759:26
1993 899 827:13
1994 413 1135:36
1995 1389 1315:15
1996 847 1503:39
1997 930 1460:20
1998 761 1162:42
1999 1143 1225:50
2000 715 1031:40
2001 734 1273:17
2002 990 1125:31
2003 1460 1253:15
2004 1322 1065:05
2005 1693 1106:54
2006 1735 964:46
2007 1196 1081:59
2008 2370 1099:59
2009 1900 1282:49
2010 1745 1288:05
2011 3051 1234:15
2012 1545 1364:55
2013 2502 1352:29
2014 3253 1299:50
2015 2591 1223:30
2016 4021 1409:54
2017 2153 524:40
2018 3142 1539:51
2019 2640 1131:19
2020 2689 1214:00
2021 2628 1388:50
 
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