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 6 69:40
1987 0 47:00
1988 0 17:30
1989 0 45:00
1990 0 35:00
1991 0 48:28
1992 3 45:00
1993 19 51:30
1994 27 27:30
1995 3 50:00
1996 4 49:15
1997 0 34:50
1998 8 50:00
1999 1 57:20
2000 9 42:30
2001 9 69:35
2002 1 76:40
2003 13 108:30
2004 66 111:45
2005 20 145:21
2006 24 152:17
2007 65 187:59
2008 24 132:42
2009 9 75:32
2010 44 236:16
2011 15 281:19
2012 68 394:00
2013 6 408:08
2014 77 481:30
2015 173 400:00
2016 78 467:00
2017 44 490:30
2018 91 442:30
2019 141 431:54
2020 227 451:00
 
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