Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1983 0 9:15
1984 2 27:20
1985 12 29:00
1986 13 69:40
1987 18 47:00
1988 1 17:30
1989 38 45:00
1990 16 35:00
1991 58 48:28
1992 19 45:00
1993 54 51:30
1994 5 27:30
1995 19 50:00
1996 14 49:15
1997 2 34:50
1998 22 50:00
1999 1 57:20
2000 28 42:30
2001 35 69:35
2002 74 76:40
2003 117 108:30
2004 194 111:45
2005 158 145:21
2006 82 152:17
2007 49 187:59
2008 65 132:42
2009 42 75:32
2010 41 236:16
2011 132 281:19
2012 145 394:00
2013 156 408:08
2014 92 481:30
2015 49 400:00
2016 128 467:00
2017 119 490:30
2018 136 442:30
2019 529 431:54
2020 45 88:30
 
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