Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1972 45 31:00
1973 10 18:15
1974 115 7:45
1975 18 18:30
1976 67 66:30
1977 16 23:45
1978 386 116:45
1979 3013 71:45
1980 1109 109:00
1981 287 78:00
1982 231 39:00
1983 468 71:00
1984 210 30:15
1985 4389 98:00
1986 1965 41:30
1987 3847 42:15
1988 486 55:00
1989 1972 47:15
1990 795 33:00
1991 214 18:00
1992 910 28:30
1993 2136 25:45
1994 2045 40:00
1995 224 15:15
1996 0 5:00
1997 394 26:30
1998 483 20:00
1999 742 26:45
2000 2871 27:30
2001 402 23:00
2002 292 26:55
2003 472 37:45
2004 624 30:10
2005 910 34:00
2006 796 41:33
2007 3119 83:14
2008 1653 56:33
2009 2893 76:07
2010 706 52:50
2011 5294 80:30
2012 7467 94:05
2013 977 66:27
2014 363 41:10
2015 1246 49:05
2016 227 19:00
2017 2998 123:39
2018 1784 89:34
2019 2312 98:07
2020 3505 108:43
2021 48 3:00
 
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