Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1983 0 9:15
1984 11 27:20
1985 18 29:00
1986 48 69:40
1987 66 47:00
1988 43 17:30
1989 96 45:00
1990 29 35:00
1991 45 48:28
1992 143 45:00
1993 70 51:30
1994 0 27:30
1995 10 50:00
1996 6 49:15
1997 0 34:50
1998 0 50:00
1999 0 57:20
2000 0 42:30
2001 7 69:35
2002 14 76:40
2003 23 108:30
2004 31 111:45
2005 56 145:21
2006 34 152:17
2007 93 187:59
2008 273 132:42
2009 49 75:32
2010 200 236:16
2011 148 281:19
2012 1781 394:00
2013 1103 408:08
2014 855 481:30
2015 1240 400:00
2016 703 467:00
2017 910 490:30
2018 1390 442:30
2019 1532 431:54
2020 86 102:00
 
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