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 8 116:45
1979 0 71:45
1980 11 109:00
1981 3 78:00
1982 0 39:00
1983 20 71:00
1984 1 30:15
1985 74 98:00
1986 0 41:30
1987 5 42:15
1988 26 55:00
1989 6 47:15
1990 2 33:00
1991 4 18:00
1992 12 28:30
1993 1 25:45
1994 12 40:00
1995 0 15:15
1996 0 5:00
1997 7 26:30
1998 3 20:00
1999 16 26:45
2000 2 27:30
2001 4 23:00
2002 1 26:55
2003 8 37:45
2004 12 30:10
2005 10 34:00
2006 3 41:33
2007 24 83:14
2008 10 56:33
2009 33 76:07
2010 11 52:50
2011 71 80:30
2012 27 94:05
2013 2 66:27
2014 14 41:10
2015 4 49:05
2016 0 19:00
2017 8 123:39
2018 10 89:34
2019 28 98:07
2020 17 108:43
2021 0 4:45
 
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