Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1972 0 31:00
1973 1 18:15
1974 3 7:45
1975 2 18:30
1976 0 66:30
1977 8 23:45
1978 100 116:45
1979 63 71:45
1980 26 109:00
1981 1 78:00
1982 32 39:00
1983 67 71:00
1984 5 30:15
1985 36 98:00
1986 0 41:30
1987 2 42:15
1988 20 55:00
1989 0 47:15
1990 0 33:00
1991 5 18:00
1992 1 28:30
1993 2 25:45
1994 1 40:00
1995 0 15:15
1996 2 5:00
1997 0 26:30
1998 2 20:00
1999 0 26:45
2000 65 27:30
2001 7 23:00
2002 1 26:55
2003 3 37:45
2004 1 30:10
2005 4 34:00
2006 0 41:33
2007 5 83:14
2008 20 56:33
2009 101 76:07
2010 33 52:50
2011 31 80:30
2012 2 94:05
2013 17 66:27
2014 35 41:10
2015 3 49:05
2016 1 19:00
2017 19 123:39
2018 8 89:34
2019 115 98:07
2020 51 108:43
2021 0 4:45
 
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