Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1983 4747 9:15
1984 1641 27:20
1985 1619 29:00
1986 3417 69:40
1987 282 47:00
1988 243 17:30
1989 1486 45:00
1990 638 35:30
1991 12738 48:28
1992 3261 45:00
1993 2206 51:30
1994 1771 27:30
1995 13905 50:00
1996 2864 49:15
1997 6674 34:50
1998 2636 50:00
1999 7748 57:20
2000 2688 42:30
2001 3355 69:35
2002 6459 76:40
2003 10014 108:30
2004 12263 111:45
2005 5866 145:21
2006 10651 152:17
2007 9260 187:59
2008 32985 132:42
2009 1956 75:32
2010 9067 236:16
2011 14252 281:19
2012 18472 394:00
2013 14912 408:08
2014 22457 481:30
2015 8013 400:00
2016 17347 467:00
2017 17810 490:30
2018 12297 442:30
2019 40179 431:54
2020 144978 451:00
2021 82201 379:30
 
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