Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1983 1 9:15
1984 6 27:20
1985 1 29:00
1986 2 69:40
1987 0 47:00
1988 0 17:30
1989 130 45:00
1990 3 35:00
1991 12 48:28
1992 0 45:00
1993 158 51:30
1994 27 27:30
1995 3 50:00
1996 53 49:15
1997 67 34:50
1998 1 50:00
1999 59 57:20
2000 18 42:30
2001 143 69:35
2002 68 76:40
2003 211 108:30
2004 18 111:45
2005 677 145:21
2006 26 152:17
2007 1638 187:59
2008 191 132:42
2009 4 75:32
2010 438 236:16
2011 17 281:19
2012 1180 394:00
2013 220 408:08
2014 78 481:30
2015 515 400:00
2016 10 467:00
2017 270 490:30
2018 84 442:30
2019 93 431:54
2020 7 102:00
 
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