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 30 18:30
1976 2 66:30
1977 0 23:45
1978 49 116:45
1979 10 71:45
1980 126 109:00
1981 165 78:00
1982 104 39:00
1983 19 71:00
1984 8 30:15
1985 40 98:00
1986 45 41:30
1987 23 42:15
1988 2 55:00
1989 0 47:15
1990 50 33:00
1991 1 18:00
1992 43 28:30
1993 140 25:45
1994 11 40:00
1995 17 15:15
1996 7 5:00
1997 0 26:30
1998 0 20:00
1999 23 26:45
2000 42 27:30
2001 0 23:00
2002 89 26:55
2003 15 37:45
2004 10 30:10
2005 3 34:00
2006 1 41:33
2007 4 83:14
2008 162 56:33
2009 64 76:07
2010 13 52:50
2011 48 80:30
2012 142 94:05
2013 44 66:27
2014 50 41:10
2015 68 49:05
2016 166 19:00
2017 169 123:39
2018 116 89:34
2019 264 98:07
2020 402 108:43
2021 0 1:30
 
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