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 1 69:40
1987 7 47:00
1988 4 17:30
1989 5 45:00
1990 0 35:00
1991 3 48:28
1992 1 45:00
1993 0 51:30
1994 3 27:30
1995 2 50:00
1996 3 49:15
1997 5 34:50
1998 0 50:00
1999 4 57:20
2000 4 42:30
2001 24 69:35
2002 23 76:40
2003 17 108:30
2004 33 111:45
2005 93 145:21
2006 197 152:17
2007 179 187:59
2008 87 132:42
2009 45 75:32
2010 217 236:16
2011 278 281:19
2012 432 394:00
2013 378 408:08
2014 597 481:30
2015 416 400:00
2016 560 467:00
2017 378 490:30
2018 1147 442:30
2019 1175 431:54
2020 360 88:30
 
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