Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1972 2728 31:00
1973 2137 18:15
1974 541 7:45
1975 926 18:30
1976 7156 66:30
1977 1344 23:45
1978 13199 116:45
1979 5439 71:45
1980 14726 109:00
1981 14114 78:00
1982 10731 39:00
1983 7687 71:00
1984 1461 30:15
1985 41829 98:00
1986 3156 41:30
1987 2222 42:15
1988 5653 55:00
1989 2234 47:15
1990 5934 33:00
1991 24626 18:00
1992 9928 28:30
1993 7875 25:45
1994 6727 40:00
1995 3563 15:15
1996 670 5:00
1997 267 26:30
1998 151 20:00
1999 4073 26:45
2000 400 27:30
2001 743 23:00
2002 2960 26:55
2003 2657 37:45
2004 4453 30:10
2005 5789 34:00
2006 5210 41:33
2007 6682 83:14
2008 6920 56:33
2009 9406 76:07
2010 4373 52:50
2011 12960 80:30
2012 12473 94:05
2013 29511 66:27
2014 19163 41:10
2015 20941 49:05
2016 37864 19:00
2017 190977 123:39
2018 44643 89:34
2019 19380 98:07
2020 19756 108:43
2021 2782 4:45
 
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