Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1972 0 31:00
1973 0 18:15
1974 0 7:45
1975 0 18:30
1976 2 66:30
1977 0 23:45
1978 0 116:45
1979 4 71:45
1980 10 109:00
1981 1 78:00
1982 0 39:00
1983 8 71:00
1984 0 30:15
1985 5 98:00
1986 0 41:30
1987 5 42:15
1988 1 55:00
1989 3 47:15
1990 0 33:00
1991 0 18:00
1992 10 28:30
1993 1 25:45
1994 2 40:00
1995 0 15:15
1996 1 5:00
1997 1 26:30
1998 0 20:00
1999 0 26:45
2000 3 27:30
2001 0 23:00
2002 0 26:55
2003 1 37:45
2004 9 30:10
2005 15 34:00
2006 0 41:33
2007 7 83:14
2008 3 56:33
2009 15 76:07
2010 6 52:50
2011 15 80:30
2012 11 94:05
2013 0 66:27
2014 2 41:10
2015 3 49:05
2016 1 19:00
2017 3 123:39
2018 13 89:34
2019 3 98:07
2020 2 108:43
 
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