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 25 69:40
1987 0 47:00
1988 106 17:30
1989 0 45:00
1990 0 35:00
1991 0 48:28
1992 0 45:00
1993 0 51:30
1994 0 27:30
1995 0 50:00
1996 0 49:15
1997 0 34:50
1998 0 50:00
1999 0 57:20
2000 0 42:30
2001 31 69:35
2002 59 76:40
2003 4 108:30
2004 338 111:45
2005 104 145:21
2006 43 152:17
2007 302 187:59
2008 142 132:42
2009 605 75:32
2010 567 236:16
2011 1104 281:19
2012 1063 394:00
2013 1288 408:08
2014 5281 481:30
2015 2606 400:00
2016 1873 467:00
2017 1172 490:30
2018 2365 442:30
2019 1940 431:54
2020 0 88:30
 
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