Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1983 44 9:15
1984 52 27:20
1985 96 29:00
1986 306 69:40
1987 199 47:00
1988 10 17:30
1989 170 45:00
1990 98 35:30
1991 151 48:28
1992 327 45:00
1993 358 51:30
1994 208 27:30
1995 192 50:00
1996 199 49:15
1997 148 34:50
1998 40 50:00
1999 56 57:20
2000 48 42:30
2001 106 69:35
2002 105 76:40
2003 267 108:30
2004 535 111:45
2005 651 145:21
2006 447 152:17
2007 1041 187:59
2008 267 132:42
2009 88 75:32
2010 4994 236:16
2011 2222 281:19
2012 2229 394:00
2013 1654 408:08
2014 1279 481:30
2015 821 400:00
2016 876 467:00
2017 1177 490:30
2018 15486 442:30
2019 1233 431:54
2020 11161 451:00
2021 8962 379:30
 
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