Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1983 0 9:15
1984 0 27:20
1985 0 29:00
1986 2 69:40
1987 4 47:00
1988 0 17:30
1989 1 45:00
1990 2 35:00
1991 2 48:28
1992 3 45:00
1993 4 51:30
1994 3 27:30
1995 2 50:00
1996 0 49:15
1997 2 34:50
1998 1 50:00
1999 7 57:20
2000 4 42:30
2001 1 69:35
2002 2 76:40
2003 5 108:30
2004 9 111:45
2005 8 145:21
2006 10 152:17
2007 22 187:59
2008 22 132:42
2009 3 75:32
2010 20 236:16
2011 28 281:19
2012 34 394:00
2013 22 408:08
2014 13 481:30
2015 13 400:00
2016 12 467:00
2017 11 490:30
2018 28 442:30
2019 8 431:54
2020 2 66:00
 
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