Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1972 1 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 0 71:45
1980 8 109:00
1981 0 78:00
1982 0 39:00
1983 14 71:00
1984 0 30:15
1985 0 98:00
1986 0 41:30
1987 11 42:15
1988 4 55:00
1989 36 47:15
1990 3 33:00
1991 0 18:00
1992 3 28:30
1993 0 25:45
1994 3 40:00
1995 1 15:15
1996 1 5:00
1997 104 26:30
1998 0 20:00
1999 3 26:45
2000 1 27:30
2001 0 23:00
2002 0 26:55
2003 2 37:45
2004 18 30:10
2005 49 34:00
2006 0 41:33
2007 13 83:14
2008 11 56:33
2009 6 76:07
2010 1 52:50
2011 7 80:30
2012 6 94:05
2013 5 66:27
2014 0 41:10
2015 1 49:05
2016 0 19:00
2017 32 123:39
2018 10 89:34
2019 4 98:07
2020 5 108:43
2021 0 4:45
 
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