Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1972 28 31:00
1973 0 18:15
1974 0 7:45
1975 167 18:30
1976 145 66:30
1977 573 23:45
1978 0 116:45
1979 0 71:45
1980 96 109:00
1981 0 78:00
1982 0 39:00
1983 94 71:00
1984 5 30:15
1985 323 98:00
1986 17 41:30
1987 0 42:15
1988 0 55:00
1989 1 47:15
1990 0 33:00
1991 22 18:00
1992 111 28:30
1993 84 25:45
1994 0 40:00
1995 87 15:15
1996 0 5:00
1997 75 26:30
1998 0 20:00
1999 0 26:45
2000 0 27:30
2001 0 23:00
2002 121 26:55
2003 0 37:45
2004 0 30:10
2005 0 34:00
2006 0 41:33
2007 3 83:14
2008 36 56:33
2009 14 76:07
2010 0 52:50
2011 0 80:30
2012 8 94:05
2013 16 66:27
2014 2 41:10
2015 0 49:05
2016 0 19:00
2017 451 123:39
2018 0 89:34
2019 31 98:07
2020 0 108:43
2021 0 3:00
 
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