Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1972 5 31:00
1973 0 18:15
1974 1 7:45
1975 2 18:30
1976 15 66:30
1977 48 23:45
1978 28 116:45
1979 437 71:45
1980 118 109:00
1981 371 78:00
1982 366 39:00
1983 123 71:00
1984 19 30:15
1985 493 98:00
1986 360 41:30
1987 132 42:15
1988 1120 55:00
1989 1222 47:15
1990 9 33:00
1991 87 18:00
1992 122 28:30
1993 112 25:45
1994 186 40:00
1995 611 15:15
1996 3 5:00
1997 122 26:30
1998 13 20:00
1999 53 26:45
2000 3 27:30
2001 393 23:00
2002 1146 26:55
2003 321 37:45
2004 535 30:10
2005 692 34:00
2006 131 41:33
2007 141 83:14
2008 53 56:33
2009 64 76:07
2010 74 52:50
2011 26 80:30
2012 819 94:05
2013 339 66:27
2014 10 41:10
2015 16 49:05
2016 133 19:00
2017 158 123:39
2018 176 89:34
2019 4 98:07
2020 228 108:43
2021 0 3:00
 
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