Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1972 3 31:00
1973 0 18:15
1974 0 7:45
1975 0 18:30
1976 22 66:30
1977 5 23:45
1978 22 116:45
1979 14 71:45
1980 26 109:00
1981 25 78:00
1982 30 39:00
1983 20 71:00
1984 2 30:15
1985 1 98:00
1986 11 41:30
1987 1 42:15
1988 3 55:00
1989 3 47:15
1990 0 33:00
1991 0 18:00
1992 1 28:30
1993 0 25:45
1994 6 40:00
1995 4 15:15
1996 0 5:00
1997 0 26:30
1998 0 20:00
1999 0 26:45
2000 0 27:30
2001 0 23:00
2002 0 26:55
2003 4 37:45
2004 0 30:10
2005 0 34:00
2006 0 41:33
2007 0 83:14
2008 0 56:33
2009 0 76:07
2010 3 52:50
2011 0 80:30
2012 3 94:05
2013 4 66:27
2014 0 41:10
2015 2 49:05
2016 0 19:00
2017 2 123:39
2018 0 89:34
2019 2 98:07
2020 1 108:43
2021 0 4:45
 
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