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 0 47:00
1988 0 17:30
1989 2 45:00
1990 3 35:00
1991 1 48:28
1992 0 45:00
1993 3 51:30
1994 1 27:30
1995 1 50:00
1996 1 49:15
1997 7 34:50
1998 5 50:00
1999 18 57:20
2000 3 42:30
2001 1 69:35
2002 5 76:40
2003 1 108:30
2004 2 111:45
2005 3 145:21
2006 2 152:17
2007 4 187:59
2008 5 132:42
2009 1 75:32
2010 4 236:16
2011 7 281:19
2012 1 394:00
2013 4 408:08
2014 3 481:30
2015 6 400:00
2016 2 467:00
2017 1 490:30
2018 3 442:30
2019 0 431:54
2020 4 451:00
 
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