Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1983 0 9:15
1984 151 27:20
1985 193 29:00
1986 1041 69:40
1987 531 47:00
1988 461 17:30
1989 1294 45:00
1990 425 35:00
1991 1044 48:28
1992 323 45:00
1993 916 51:30
1994 76 27:30
1995 198 50:00
1996 57 49:15
1997 159 34:50
1998 36 50:00
1999 106 57:20
2000 8 42:30
2001 57 69:35
2002 28 76:40
2003 83 108:30
2004 413 111:45
2005 156 145:21
2006 132 152:17
2007 1437 187:59
2008 255 132:42
2009 158 75:32
2010 60 236:16
2011 199 281:19
2012 1417 394:00
2013 771 408:08
2014 1991 481:30
2015 1800 400:00
2016 1589 467:00
2017 1215 490:30
2018 1377 442:30
2019 1565 431:54
2020 840 102:00
 
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