Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
1983 0 9:15
1984 24 27:20
1985 221 29:00
1986 558 69:40
1987 1060 47:00
1988 308 17:30
1989 467 45:00
1990 886 35:30
1991 298 48:28
1992 129 45:00
1993 1108 51:30
1994 0 27:30
1995 386 50:00
1996 673 49:15
1997 16 34:50
1998 64 50:00
1999 263 57:20
2000 87 42:30
2001 2119 69:35
2002 612 76:40
2003 918 108:30
2004 1452 111:45
2005 1186 145:21
2006 1596 152:17
2007 4807 187:59
2008 3521 132:42
2009 592 75:32
2010 3997 236:16
2011 7278 281:19
2012 9631 394:00
2013 6005 408:08
2014 4822 481:30
2015 7884 400:00
2016 9201 467:00
2017 10261 490:30
2018 15171 442:30
2019 23213 431:54
2020 18760 451:00
2021 12477 379:30
 
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