Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1983 2 9:15
1984 0 27:20
1985 6 29:00
1986 4 69:40
1987 15 47:00
1988 1 17:30
1989 2 45:00
1990 16 35:00
1991 5 48:28
1992 8 45:00
1993 3 51:30
1994 1 27:30
1995 6 50:00
1996 0 49:15
1997 1 34:50
1998 17 50:00
1999 5 57:20
2000 6 42:30
2001 19 69:35
2002 46 76:40
2003 6 108:30
2004 13 111:45
2005 10 145:21
2006 47 152:17
2007 34 187:59
2008 51 132:42
2009 2 75:32
2010 22 236:16
2011 58 281:19
2012 95 394:00
2013 74 408:08
2014 147 481:30
2015 98 400:00
2016 88 467:00
2017 70 490:30
2018 127 442:30
2019 155 431:54
2020 133 396:30
 
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