Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1983 1 9:15
1984 4 27:20
1985 6 29:00
1986 17 69:40
1987 8 47:00
1988 0 17:30
1989 10 45:00
1990 9 35:30
1991 24 48:28
1992 2 45:00
1993 3 51:30
1994 6 27:30
1995 0 50:00
1996 124 49:15
1997 19 34:50
1998 6 50:00
1999 95 57:20
2000 4 42:30
2001 154 69:35
2002 92 76:40
2003 64 108:30
2004 222 111:45
2005 16 145:21
2006 7 152:17
2007 29 187:59
2008 51 132:42
2009 34 75:32
2010 1095 236:16
2011 30 281:19
2012 202 394:00
2013 7 408:08
2014 249 481:30
2015 13 400:00
2016 24 467:00
2017 10 490:30
2018 4 442:30
2019 2791 431:54
2020 20 451:00
2021 3562 379:30
 
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