Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1983 52 9:15
1984 147 27:20
1985 235 29:00
1986 55 69:40
1987 293 47:00
1988 42 17:30
1989 132 45:00
1990 82 35:00
1991 142 48:28
1992 35 45:00
1993 68 51:30
1994 63 27:30
1995 31 50:00
1996 19 49:15
1997 28 34:50
1998 48 50:00
1999 62 57:20
2000 20 42:30
2001 110 69:35
2002 41 76:40
2003 180 108:30
2004 185 111:45
2005 263 145:21
2006 659 152:17
2007 693 187:59
2008 599 132:42
2009 246 75:32
2010 583 236:16
2011 1318 281:19
2012 1462 394:00
2013 580 408:08
2014 1710 481:30
2015 1275 400:00
2016 642 467:00
2017 1504 490:30
2018 2445 442:30
2019 1842 431:54
2020 1455 451:00
 
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