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 40 791:25
1978 154 820:52
1979 353 934:10
1980 297 731:36
1981 814 944:01
1982 532 768:05
1983 340 673:25
1984 237 682:07
1985 128 775:03
1986 317 933:53
1987 506 1120:12
1988 487 1184:32
1989 817 1293:12
1990 1003 944:40
1991 563 858:50
1992 446 759:26
1993 480 827:13
1994 352 1135:36
1995 709 1315:15
1996 432 1503:39
1997 343 1460:20
1998 542 1162:42
1999 408 1225:50
2000 375 1031:40
2001 331 1273:17
2002 491 1125:31
2003 519 1253:15
2004 548 1065:05
2005 402 1106:54
2006 305 964:46
2007 484 1081:59
2008 608 1099:59
2009 914 1282:49
2010 720 1288:05
2011 600 1234:15
2012 563 1364:55
2013 793 1352:29
2014 497 1299:50
2015 549 1223:30
2016 464 1409:54
2017 33 524:40
2018 484 1539:51
2019 420 1131:19
2020 340 1214:00
2021 78 469:35
 
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