Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1983 5 9:15
1984 71 27:20
1985 28 29:00
1986 11 69:40
1987 4 47:00
1988 34 17:30
1989 120 45:00
1990 4 35:00
1991 32 48:28
1992 8 45:00
1993 19 51:30
1994 2 27:30
1995 39 50:00
1996 15 49:15
1997 1 34:50
1998 13 50:00
1999 0 57:20
2000 6 42:30
2001 4 69:35
2002 16 76:40
2003 24 108:30
2004 17 111:45
2005 38 145:21
2006 3 152:17
2007 26 187:59
2008 15 132:42
2009 8 75:32
2010 55 236:16
2011 132 281:19
2012 65 394:00
2013 119 408:08
2014 98 481:30
2015 7 400:00
2016 32 467:00
2017 2 490:30
2018 55 442:30
2019 12 431:54
2020 0 88:30
 
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