Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1983 0 9:15
1984 11 27:20
1985 9 29:00
1986 14 69:40
1987 34 47:00
1988 0 17:30
1989 13 45:00
1990 44 35:30
1991 50 48:28
1992 15 45:00
1993 41 51:30
1994 11 27:30
1995 25 50:00
1996 13 49:15
1997 1 34:50
1998 10 50:00
1999 3 57:20
2000 8 42:30
2001 18 69:35
2002 20 76:40
2003 53 108:30
2004 113 111:45
2005 57 145:21
2006 20 152:17
2007 40 187:59
2008 14 132:42
2009 14 75:32
2010 25 236:16
2011 81 281:19
2012 158 394:00
2013 168 408:08
2014 202 481:30
2015 97 400:00
2016 201 467:00
2017 338 490:30
2018 256 442:30
2019 450 431:54
2020 709 451:00
2021 130 379:30
 
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