Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1983 0 9:15
1984 2 27:20
1985 0 29:00
1986 0 69:40
1987 0 47:00
1988 0 17:30
1989 0 45:00
1990 0 35:00
1991 9 48:28
1992 3 45:00
1993 2 51:30
1994 0 27:30
1995 10 50:00
1996 0 49:15
1997 8 34:50
1998 15 50:00
1999 1 57:20
2000 0 42:30
2001 2 69:35
2002 2 76:40
2003 4 108:30
2004 10 111:45
2005 15 145:21
2006 2 152:17
2007 16 187:59
2008 4 132:42
2009 28 75:32
2010 36 236:16
2011 60 281:19
2012 46 394:00
2013 48 408:08
2014 33 481:30
2015 40 400:00
2016 9 467:00
2017 83 490:30
2018 58 442:30
2019 74 431:54
2020 0 88:30
 
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