Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1972 406 31:00
1973 40 18:15
1974 31 7:45
1975 54 18:30
1976 47 66:30
1977 141 23:45
1978 527 116:45
1979 299 71:45
1980 451 109:00
1981 44 78:00
1982 8 39:00
1983 117 71:00
1984 45 30:15
1985 253 98:00
1986 14 41:30
1987 1 42:15
1988 2 55:00
1989 0 47:15
1990 18 33:00
1991 61 18:00
1992 5 28:30
1993 15 25:45
1994 19 40:00
1995 0 15:15
1996 0 5:00
1997 1 26:30
1998 1 20:00
1999 0 26:45
2000 0 27:30
2001 0 23:00
2002 1 26:55
2003 3 37:45
2004 1 30:10
2005 4 34:00
2006 6 41:33
2007 8 83:14
2008 2 56:33
2009 596 76:07
2010 99 52:50
2011 53 80:30
2012 80 94:05
2013 78 66:27
2014 16 41:10
2015 26 49:05
2016 6 19:00
2017 16 123:39
2018 17 89:34
2019 3 98:07
2020 2 108:43
2021 0 4:45
 
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