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 0 69:40
1987 0 47:00
1988 1 17:30
1989 0 45:00
1990 1 35:30
1991 0 48:28
1992 0 45:00
1993 2 51:30
1994 0 27:30
1995 1 50:00
1996 1 49:15
1997 0 34:50
1998 0 50:00
1999 0 57:20
2000 2 42:30
2001 0 69:35
2002 0 76:40
2003 0 108:30
2004 0 111:45
2005 2 145:21
2006 0 152:17
2007 1 187:59
2008 2 132:42
2009 0 75:32
2010 1 236:16
2011 4 281:19
2012 3 394:00
2013 1 408:08
2014 7 481:30
2015 6 400:00
2016 22 467:00
2017 2 490:30
2018 8 442:30
2019 13 431:54
2020 21 451:00
2021 7 291:30
 
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