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 0 69:40
1987 3 47:00
1988 0 17:30
1989 0 45:00
1990 1 35:00
1991 0 48:28
1992 3 45:00
1993 1 51:30
1994 0 27:30
1995 1 50:00
1996 1 49:15
1997 0 34:50
1998 0 50:00
1999 1 57:20
2000 0 42:30
2001 2 69:35
2002 1 76:40
2003 2 108:30
2004 1 111:45
2005 9 145:21
2006 10 152:17
2007 0 187:59
2008 39 132:42
2009 0 75:32
2010 3 236:16
2011 12 281:19
2012 13 394:00
2013 18 408:08
2014 12 481:30
2015 9 400:00
2016 27 467:00
2017 28 490:30
2018 25 442:30
2019 43 431:54
2020 1 66:00
 
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