Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1972 2 31:00
1973 0 18:15
1974 0 7:45
1975 0 18:30
1976 0 66:30
1977 0 23:45
1978 21 116:45
1979 24 71:45
1980 16 109:00
1981 0 78:00
1982 0 39:00
1983 1 71:00
1984 2 30:15
1985 112 98:00
1986 0 41:30
1987 2 42:15
1988 0 55:00
1989 0 47:15
1990 0 33:00
1991 0 18:00
1992 0 28:30
1993 0 25:45
1994 0 40:00
1995 0 15:15
1996 0 5:00
1997 0 26:30
1998 0 20:00
1999 0 26:45
2000 0 27:30
2001 5 23:00
2002 0 26:55
2003 1 37:45
2004 22 30:10
2005 0 34:00
2006 1 41:33
2007 1 83:14
2008 65 56:33
2009 0 76:07
2010 0 52:50
2011 16 80:30
2012 8 94:05
2013 2 66:27
2014 6 41:10
2015 1 49:05
2016 0 19:00
2017 51 123:39
2018 0 89:34
2019 80 98:07
2020 0 108:43
2021 0 4:45
 
Partners