Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1972 501 31:00
1973 109 18:15
1974 12 7:45
1975 5 18:30
1976 229 66:30
1977 166 23:45
1978 2022 116:45
1979 611 71:45
1980 253 109:00
1981 671 78:00
1982 3037 39:00
1983 252 71:00
1984 63 30:15
1985 393 98:00
1986 1759 41:30
1987 370 42:15
1988 1387 55:00
1989 325 47:15
1990 87 33:00
1991 709 18:00
1992 2308 28:30
1993 5689 25:45
1994 37 40:00
1995 1078 15:15
1996 14 5:00
1997 984 26:30
1998 3 20:00
1999 1004 26:45
2000 70 27:30
2001 964 23:00
2002 949 26:55
2003 1 37:45
2004 548 30:10
2005 247 34:00
2006 64 41:33
2007 273 83:14
2008 91 56:33
2009 255 76:07
2010 58 52:50
2011 475 80:30
2012 425 94:05
2013 967 66:27
2014 710 41:10
2015 48 49:05
2016 25 19:00
2017 96 123:39
2018 597 89:34
2019 156 98:07
2020 384 108:43
2021 7 4:45
 
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