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 14 71:45
1980 20 109:00
1981 389 78:00
1982 411 39:00
1983 199 71:00
1984 224 30:15
1985 11 98:00
1986 129 41:30
1987 3 42:15
1988 113 55:00
1989 7 47:15
1990 0 33:00
1991 23 18:00
1992 12 28:30
1993 25 25:45
1994 17 40:00
1995 111 15:15
1996 0 5:00
1997 30 26:30
1998 0 20:00
1999 110 26:45
2000 30 27:30
2001 42 23:00
2002 13 26:55
2003 0 37:45
2004 32 30:10
2005 0 34:00
2006 5 41:33
2007 4 83:14
2008 24 56:33
2009 130 76:07
2010 8 52:50
2011 11 80:30
2012 57 94:05
2013 77 66:27
2014 10 41:10
2015 5 49:05
2016 98 19:00
2017 25 123:39
2018 32 89:34
2019 39 98:07
2020 99 108:43
2021 0 1:30
 
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