Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1972 0 31:00
1973 0 18:15
1974 1 7:45
1975 0 18:30
1976 46 66:30
1977 111 23:45
1978 279 116:45
1979 48 71:45
1980 9 109:00
1981 289 78:00
1982 368 39:00
1983 231 71:00
1984 49 30:15
1985 479 98:00
1986 155 41:30
1987 402 42:15
1988 42 55:00
1989 97 47:15
1990 1 33:00
1991 0 18:00
1992 543 28:30
1993 6484 25:45
1994 21 40:00
1995 78 15:15
1996 98 5:00
1997 0 26:30
1998 0 20:00
1999 707 26:45
2000 85 27:30
2001 0 23:00
2002 65 26:55
2003 3 37:45
2004 340 30:10
2005 0 34:00
2006 54 41:33
2007 1961 83:14
2008 261 56:33
2009 3741 76:07
2010 7 52:50
2011 284 80:30
2012 1184 94:05
2013 115 66:27
2014 801 41:10
2015 643 49:05
2016 737 19:00
2017 579 123:39
2018 1265 89:34
2019 833 98:07
2020 2581 108:43
2021 0 4:45
 
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