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 1 66:30
1977 0 23:45
1978 0 116:45
1979 9 71:45
1980 0 109:00
1981 0 78:00
1982 0 39:00
1983 5 71:00
1984 0 30:15
1985 9 98:00
1986 0 41:30
1987 0 42:15
1988 2 55:00
1989 1 47:15
1990 0 33:00
1991 0 18:00
1992 0 28:30
1993 0 25:45
1994 0 40:00
1995 1 15:15
1996 1 5:00
1997 4 26:30
1998 0 20:00
1999 1 26:45
2000 1 27:30
2001 1 23:00
2002 2 26:55
2003 2 37:45
2004 6 30:10
2005 1 34:00
2006 1 41:33
2007 19 83:14
2008 2 56:33
2009 7 76:07
2010 1 52:50
2011 22 80:30
2012 38 94:05
2013 2 66:27
2014 8 41:10
2015 9 49:05
2016 9 19:00
2017 26 123:39
2018 16 89:34
2019 218 98:07
2020 208 108:43
2021 3 4:45
 
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