Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1983 373 9:15
1984 481 27:20
1985 601 29:00
1986 1655 69:40
1987 1675 47:00
1988 210 17:30
1989 4215 45:00
1990 954 35:00
1991 1212 48:28
1992 1314 45:00
1993 437 51:30
1994 456 27:30
1995 2455 50:00
1996 920 49:15
1997 914 34:50
1998 726 50:00
1999 1410 57:20
2000 1439 42:30
2001 2012 69:35
2002 2044 76:40
2003 1307 108:30
2004 1019 111:45
2005 3708 145:21
2006 7714 152:17
2007 3097 187:59
2008 2059 132:42
2009 2433 75:32
2010 3720 236:16
2011 4298 281:19
2012 6434 394:00
2013 4784 408:08
2014 9307 481:30
2015 6535 400:00
2016 3633 467:00
2017 4991 490:30
2018 6599 442:30
2019 7428 431:54
2020 384 102:00
 
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