Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1983 0 9:15
1984 0 27:20
1985 11 29:00
1986 2 69:40
1987 27 47:00
1988 0 17:30
1989 2 45:00
1990 5 35:00
1991 7 48:28
1992 6 45:00
1993 13 51:30
1994 1 27:30
1995 0 50:00
1996 7 49:15
1997 8 34:50
1998 3 50:00
1999 10 57:20
2000 3 42:30
2001 1 69:35
2002 6 76:40
2003 16 108:30
2004 12 111:45
2005 4 145:21
2006 2 152:17
2007 20 187:59
2008 45 132:42
2009 13 75:32
2010 21 236:16
2011 48 281:19
2012 22 394:00
2013 42 408:08
2014 74 481:30
2015 16 400:00
2016 15 467:00
2017 42 490:30
2018 85 442:30
2019 55 431:54
2020 0 102:00
 
Partners