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 0 66:30
1977 0 23:45
1978 0 116:45
1979 4 71:45
1980 0 109:00
1981 0 78:00
1982 0 39:00
1983 0 71:00
1984 0 30:15
1985 0 98:00
1986 0 41:30
1987 0 42:15
1988 0 55:00
1989 0 47:15
1990 0 33:00
1991 0 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 1 20:00
1999 0 26:45
2000 0 27:30
2001 1 23:00
2002 1 26:55
2003 0 37:45
2004 0 30:10
2005 1 34:00
2006 1 41:33
2007 0 83:14
2008 8 56:33
2009 13 76:07
2010 15 52:50
2011 2 80:30
2012 19 94:05
2013 18 66:27
2014 8 41:10
2015 12 49:05
2016 1 19:00
2017 7 123:39
2018 15 89:34
2019 26 98:07
2020 16 108:43
2021 0 1:30
 
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