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 0 47:00
1988 0 17:30
1989 1 45:00
1990 1 35:00
1991 3 48:28
1992 0 45:00
1993 4 51:30
1994 0 27:30
1995 6 50:00
1996 0 49:15
1997 0 34:50
1998 0 50:00
1999 0 57:20
2000 1 42:30
2001 0 69:35
2002 8 76:40
2003 1 108:30
2004 10 111:45
2005 2 145:21
2006 0 152:17
2007 14 187:59
2008 0 132:42
2009 0 75:32
2010 2 236:16
2011 6 281:19
2012 9 394:00
2013 4 408:08
2014 36 481:30
2015 17 400:00
2016 12 467:00
2017 58 490:30
2018 37 442:30
2019 28 431:54
2020 0 88:30
 
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