Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1983 0 9:15
1984 0 27:20
1985 5 29:00
1986 7 69:40
1987 6 47:00
1988 5 17:30
1989 5 45:00
1990 11 35:00
1991 10 48:28
1992 2 45:00
1993 7 51:30
1994 8 27:30
1995 4 50:00
1996 3 49:15
1997 6 34:50
1998 2 50:00
1999 11 57:20
2000 1 42:30
2001 12 69:35
2002 23 76:40
2003 30 108:30
2004 28 111:45
2005 35 145:21
2006 43 152:17
2007 66 187:59
2008 31 132:42
2009 12 75:32
2010 106 236:16
2011 115 281:19
2012 104 394:00
2013 98 408:08
2014 95 481:30
2015 90 400:00
2016 93 467:00
2017 150 490:30
2018 117 442:30
2019 212 431:54
2020 33 88:30
 
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