Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1983 0 9:15
1984 0 27:20
1985 1 29:00
1986 3 69:40
1987 0 47:00
1988 0 17:30
1989 0 45:00
1990 0 35:00
1991 0 48:28
1992 0 45:00
1993 2 51:30
1994 1 27:30
1995 0 50:00
1996 0 49:15
1997 0 34:50
1998 0 50:00
1999 1 57:20
2000 0 42:30
2001 0 69:35
2002 1 76:40
2003 1 108:30
2004 2 111:45
2005 2 145:21
2006 4 152:17
2007 7 187:59
2008 1 132:42
2009 2 75:32
2010 3 236:16
2011 11 281:19
2012 9 394:00
2013 3 408:08
2014 8 481:30
2015 11 400:00
2016 11 467:00
2017 9 490:30
2018 6 442:30
2019 3 431:54
2020 2 66:00
 
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