Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1983 0 9:15
1984 0 27:20
1985 2 29:00
1986 1 69:40
1987 1 47:00
1988 0 17:30
1989 0 45:00
1990 0 35:00
1991 1 48:28
1992 0 45:00
1993 1 51:30
1994 0 27:30
1995 0 50:00
1996 1 49:15
1997 0 34:50
1998 0 50:00
1999 0 57:20
2000 0 42:30
2001 0 69:35
2002 0 76:40
2003 0 108:30
2004 112 111:45
2005 1 145:21
2006 0 152:17
2007 4 187:59
2008 3 132:42
2009 0 75:32
2010 0 236:16
2011 0 281:19
2012 154 394:00
2013 1073 408:08
2014 1098 481:30
2015 1490 400:00
2016 3389 467:00
2017 1514 490:30
2018 918 442:30
2019 1945 431:54
2020 1419 219:30
 
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