Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1983 2 9:15
1984 2 27:20
1985 26 29:00
1986 26 69:40
1987 8 47:00
1988 0 17:30
1989 0 45:00
1990 5 35:00
1991 3 48:28
1992 9 45:00
1993 2 51:30
1994 3 27:30
1995 3 50:00
1996 2 49:15
1997 5 34:50
1998 3 50:00
1999 0 57:20
2000 2 42:30
2001 1 69:35
2002 4 76:40
2003 9 108:30
2004 9 111:45
2005 19 145:21
2006 7 152:17
2007 3 187:59
2008 11 132:42
2009 4 75:32
2010 13 236:16
2011 1 281:19
2012 34 394:00
2013 28 408:08
2014 8 481:30
2015 0 400:00
2016 1 467:00
2017 0 490:30
2018 19 442:30
2019 11 431:54
2020 0 102:00
 
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