Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1983 2 9:15
1984 24 27:20
1985 17 29:00
1986 20 69:40
1987 99 47:00
1988 20 17:30
1989 101 45:00
1990 23 35:00
1991 28 48:28
1992 31 45:00
1993 26 51:30
1994 29 27:30
1995 39 50:00
1996 33 49:15
1997 49 34:50
1998 19 50:00
1999 32 57:20
2000 27 42:30
2001 25 69:35
2002 34 76:40
2003 58 108:30
2004 32 111:45
2005 127 145:21
2006 161 152:17
2007 181 187:59
2008 276 132:42
2009 56 75:32
2010 164 236:16
2011 120 281:19
2012 295 394:00
2013 194 408:08
2014 396 481:30
2015 151 400:00
2016 107 467:00
2017 266 490:30
2018 542 442:30
2019 677 431:54
2020 37 214:00
 
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