Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1972 234 31:00
1973 20 18:15
1974 8 7:45
1975 25 18:30
1976 29 66:30
1977 25 23:45
1978 31 116:45
1979 662 71:45
1980 1656 109:00
1981 730 78:00
1982 213 39:00
1983 704 71:00
1984 194 30:15
1985 207 98:00
1986 251 41:30
1987 24 42:15
1988 476 55:00
1989 183 47:15
1990 149 33:00
1991 42 18:00
1992 546 28:30
1993 516 25:45
1994 362 40:00
1995 51 15:15
1996 0 5:00
1997 8 26:30
1998 0 20:00
1999 0 26:45
2000 0 27:30
2001 0 23:00
2002 30 26:55
2003 17 37:45
2004 109 30:10
2005 55 34:00
2006 16 41:33
2007 43 83:14
2008 233 56:33
2009 28 76:07
2010 2 52:50
2011 22 80:30
2012 374 94:05
2013 55 66:27
2014 53 41:10
2015 79 49:05
2016 0 19:00
2017 472 123:39
2018 52 89:34
2019 75 98:07
2020 362 108:43
2021 0 1:30
 
Partners