Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1983 0 9:15
1984 0 27:20
1985 0 29:00
1986 0 69:40
1987 0 47:00
1988 0 17:30
1989 0 45:00
1990 0 35:00
1991 0 48:28
1992 0 45:00
1993 0 51:30
1994 3 27:30
1995 11 50:00
1996 9 49:15
1997 0 34:50
1998 12 50:00
1999 57 57:20
2000 6 42:30
2001 83 69:35
2002 109 76:40
2003 133 108:30
2004 103 111:45
2005 202 145:21
2006 166 152:17
2007 141 187:59
2008 176 132:42
2009 165 75:32
2010 195 236:16
2011 390 281:19
2012 316 394:00
2013 160 408:08
2014 381 481:30
2015 239 400:00
2016 187 467:00
2017 309 490:30
2018 321 442:30
2019 522 431:54
2020 522 451:00
 
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