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 2 18:30
1976 2 66:30
1977 0 23:45
1978 1 116:45
1979 18 71:45
1980 10 109:00
1981 5 78:00
1982 1 39:00
1983 6 71:00
1984 12 30:15
1985 12 98:00
1986 0 41:30
1987 0 42:15
1988 0 55:00
1989 2 47:15
1990 0 33:00
1991 1 18:00
1992 0 28:30
1993 0 25:45
1994 1 40:00
1995 0 15:15
1996 0 5:00
1997 3 26:30
1998 0 20:00
1999 0 26:45
2000 5 27:30
2001 0 23:00
2002 0 26:55
2003 0 37:45
2004 0 30:10
2005 2 34:00
2006 0 41:33
2007 2 83:14
2008 9 56:33
2009 12 76:07
2010 0 52:50
2011 3 80:30
2012 1 94:05
2013 6 66:27
2014 4 41:10
2015 2 49:05
2016 3 19:00
2017 1 123:39
2018 12 89:34
2019 26 98:07
2020 13 108:43
2021 0 1:30
 
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