Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1972 6 31:00
1973 2 18:15
1974 0 7:45
1975 0 18:30
1976 15 66:30
1977 1 23:45
1978 46 116:45
1979 103 71:45
1980 110 109:00
1981 130 78:00
1982 151 39:00
1983 220 71:00
1984 27 30:15
1985 76 98:00
1986 78 41:30
1987 68 42:15
1988 189 55:00
1989 139 47:15
1990 26 33:00
1991 105 18:00
1992 254 28:30
1993 94 25:45
1994 45 40:00
1995 72 15:15
1996 1 5:00
1997 7 26:30
1998 5 20:00
1999 9 26:45
2000 21 27:30
2001 16 23:00
2002 28 26:55
2003 20 37:45
2004 22 30:10
2005 3 34:00
2006 13 41:33
2007 11 83:14
2008 22 56:33
2009 33 76:07
2010 9 52:50
2011 23 80:30
2012 15 94:05
2013 44 66:27
2014 23 41:10
2015 17 49:05
2016 6 19:00
2017 20 123:39
2018 38 89:34
2019 19 98:07
2020 14 108:43
2021 0 4:45
 
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