Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1972 217 31:00
1973 19 18:15
1974 200 7:45
1975 295 18:30
1976 1067 66:30
1977 89 23:45
1978 10747 116:45
1979 4337 71:45
1980 5889 109:00
1981 1558 78:00
1982 187 39:00
1983 1848 71:00
1984 4050 30:15
1985 5202 98:00
1986 1228 41:30
1987 557 42:15
1988 26 55:00
1989 16 47:15
1990 24 33:00
1991 4 18:00
1992 851 28:30
1993 53 25:45
1994 744 40:00
1995 5 15:15
1996 32 5:00
1997 0 26:30
1998 61 20:00
1999 0 26:45
2000 3 27:30
2001 14 23:00
2002 18 26:55
2003 40 37:45
2004 20 30:10
2005 225 34:00
2006 160 41:33
2007 147 83:14
2008 168 56:33
2009 158 76:07
2010 73 52:50
2011 582 80:30
2012 1407 94:05
2013 262 66:27
2014 86 41:10
2015 156 49:05
2016 0 19:00
2017 669 123:39
2018 286 89:34
2019 1100 98:07
2020 12 108:43
 
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