Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1983 0 9:15
1984 99 27:20
1985 32 29:00
1986 359 69:40
1987 109 47:00
1988 25 17:30
1989 46 45:00
1990 158 35:00
1991 23 48:28
1992 6 45:00
1993 48 51:30
1994 0 27:30
1995 9 50:00
1996 23 49:15
1997 68 34:50
1998 3 50:00
1999 0 57:20
2000 5 42:30
2001 12 69:35
2002 36 76:40
2003 14 108:30
2004 6 111:45
2005 6 145:21
2006 28 152:17
2007 95 187:59
2008 76 132:42
2009 52 75:32
2010 66 236:16
2011 137 281:19
2012 107 394:00
2013 32 408:08
2014 60 481:30
2015 78 400:00
2016 223 467:00
2017 274 490:30
2018 323 442:30
2019 541 431:54
2020 619 451:00
 
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