Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1983 0 9:15
1984 1 27:20
1985 39 29:00
1986 6 69:40
1987 28 47:00
1988 4 17:30
1989 7 45:00
1990 0 35:00
1991 92 48:28
1992 28 45:00
1993 0 51:30
1994 0 27:30
1995 0 50:00
1996 1 49:15
1997 0 34:50
1998 5 50:00
1999 16 57:20
2000 4 42:30
2001 22 69:35
2002 3 76:40
2003 6 108:30
2004 22 111:45
2005 33 145:21
2006 59 152:17
2007 50 187:59
2008 22 132:42
2009 14 75:32
2010 19 236:16
2011 0 281:19
2012 40 394:00
2013 27 408:08
2014 14 481:30
2015 9 400:00
2016 83 467:00
2017 18 490:30
2018 117 442:30
2019 190 431:54
2020 53 451:00
 
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