Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1972 25 31:00
1973 3 18:15
1974 40 7:45
1975 37 18:30
1976 52 66:30
1977 77 23:45
1978 1 116:45
1979 217 71:45
1980 502 109:00
1981 69 78:00
1982 56 39:00
1983 195 71:00
1984 67 30:15
1985 308 98:00
1986 204 41:30
1987 13 42:15
1988 109 55:00
1989 1539 47:15
1990 60 33:00
1991 18 18:00
1992 116 28:30
1993 513 25:45
1994 139 40:00
1995 48 15:15
1996 0 5:00
1997 5950 26:30
1998 0 20:00
1999 0 26:45
2000 0 27:30
2001 0 23:00
2002 55 26:55
2003 0 37:45
2004 1162 30:10
2005 327 34:00
2006 1 41:33
2007 481 83:14
2008 83 56:33
2009 21 76:07
2010 28 52:50
2011 22 80:30
2012 390 94:05
2013 965 66:27
2014 517 41:10
2015 536 49:05
2016 630 19:00
2017 429 123:39
2018 785 89:34
2019 141 98:07
2020 1799 108:43
2021 0 3:00
 
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