Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1972 2 31:00
1973 0 18:15
1974 0 7:45
1975 0 18:30
1976 0 66:30
1977 0 23:45
1978 0 116:45
1979 2 71:45
1980 1 109:00
1981 2 78:00
1982 2 39:00
1983 2 71:00
1984 0 30:15
1985 6 98:00
1986 10 41:30
1987 1 42:15
1988 16 55:00
1989 8 47:15
1990 0 33:00
1991 1 18:00
1992 1 28:30
1993 4 25:45
1994 0 40:00
1995 9 15:15
1996 0 5:00
1997 11 26:30
1998 0 20:00
1999 0 26:45
2000 0 27:30
2001 0 23:00
2002 1 26:55
2003 1 37:45
2004 5 30:10
2005 0 34:00
2006 2 41:33
2007 1 83:14
2008 0 56:33
2009 1 76:07
2010 0 52:50
2011 0 80:30
2012 0 94:05
2013 2 66:27
2014 2 41:10
2015 1 49:05
2016 3 19:00
2017 10 123:39
2018 1 89:34
2019 2 98:07
2020 2 108:43
 
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