Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
1972 0 31:00
1973 21 18:15
1974 8 7:45
1975 5 18:30
1976 83 66:30
1977 6 23:45
1978 115 116:45
1979 24 71:45
1980 148 109:00
1981 53 78:00
1982 19 39:00
1983 107 71:00
1984 57 30:15
1985 252 98:00
1986 23 41:30
1987 76 42:15
1988 35 55:00
1989 17 47:15
1990 116 33:00
1991 129 18:00
1992 91 28:30
1993 10 25:45
1994 85 40:00
1995 0 15:15
1996 12 5:00
1997 20 26:30
1998 22 20:00
1999 91 26:45
2000 44 27:30
2001 13 23:00
2002 28 26:55
2003 38 37:45
2004 162 30:10
2005 100 34:00
2006 49 41:33
2007 171 83:14
2008 28 56:33
2009 45 76:07
2010 89 52:50
2011 147 80:30
2012 142 94:05
2013 79 66:27
2014 28 41:10
2015 42 49:05
2016 0 19:00
2017 142 123:39
2018 101 89:34
2019 138 98:07
2020 38 108:43
2021 0 4:45
 
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