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 0 69:40
1987 1 47:00
1988 0 17:30
1989 0 45:00
1990 1 35:00
1991 0 48:28
1992 1 45:00
1993 2 51:30
1994 1 27:30
1995 0 50:00
1996 0 49:15
1997 0 34:50
1998 1 50:00
1999 3 57:20
2000 1 42:30
2001 1 69:35
2002 3 76:40
2003 5 108:30
2004 3 111:45
2005 1 145:21
2006 10 152:17
2007 6 187:59
2008 14 132:42
2009 2 75:32
2010 3 236:16
2011 22 281:19
2012 10 394:00
2013 5 408:08
2014 18 481:30
2015 6 400:00
2016 5 467:00
2017 17 490:30
2018 12 442:30
2019 30 431:54
2020 0 102:00
 
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