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 2 23:45
1978 4 116:45
1979 10 71:45
1980 43 109:00
1981 4 78:00
1982 1 39:00
1983 7 71:00
1984 1 30:15
1985 12 98:00
1986 0 41:30
1987 5 42:15
1988 0 55:00
1989 0 47:15
1990 9 33:00
1991 2 18:00
1992 0 28:30
1993 0 25:45
1994 0 40:00
1995 0 15:15
1996 0 5:00
1997 0 26:30
1998 0 20:00
1999 0 26:45
2000 15 27:30
2001 0 23:00
2002 0 26:55
2003 0 37:45
2004 0 30:10
2005 0 34:00
2006 1 41:33
2007 1 83:14
2008 1 56:33
2009 0 76:07
2010 5 52:50
2011 14 80:30
2012 6 94:05
2013 1 66:27
2014 10 41:10
2015 1 49:05
2016 3 19:00
2017 7 123:39
2018 2 89:34
2019 3 98:07
2020 0 108:43
2021 0 4:45
 
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