Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1972 0 31:00
1973 0 18:15
1974 2 7:45
1975 0 18:30
1976 0 66:30
1977 0 23:45
1978 0 116:45
1979 140 71:45
1980 55 109:00
1981 43 78:00
1982 21 39:00
1983 39 71:00
1984 5 30:15
1985 198 98:00
1986 25 41:30
1987 137 42:15
1988 119 55:00
1989 164 47:15
1990 1 33:00
1991 124 18:00
1992 278 28:30
1993 30 25:45
1994 64 40:00
1995 70 15:15
1996 0 5:00
1997 23 26:30
1998 4 20:00
1999 12 26:45
2000 66 27:30
2001 956 23:00
2002 519 26:55
2003 328 37:45
2004 558 30:10
2005 1164 34:00
2006 478 41:33
2007 417 83:14
2008 41 56:33
2009 134 76:07
2010 34 52:50
2011 115 80:30
2012 3233 94:05
2013 72 66:27
2014 197 41:10
2015 1099 49:05
2016 318 19:00
2017 2931 123:39
2018 2911 89:34
2019 3071 98:07
2020 6494 108:43
2021 21 1:30
 
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